At first glance it appears a young woman suffocated, but further investigation shows the scene was staged.

A killer is careless when a home is destroyed by fire and a young boy is missing.

A patrol officer is shocked by the amount of blood at a traffic accident and is shocked by the coroner's ruling until an anonymous phone call re-ignites the case.

An irrigation canal murder remains unsolved until a similar murder occurs.

The light of day and DNA picture painted by molecular biologist reveals new clues about a nighttime traffic accident.

On Valentine's Day, an obstetrician finds his wife dead and calls 911; police discover inconsistencies between the blood spatter evidence and his version of events.

Weed analysis and photogrammetry are used to help solve the 1995 murder of a California teenager is found dead after disappearing from her home.

When police recover the submerged car of missing man, they find no body; the investigation that follows uncovers a deadly obsession and the motive for murder.

Emergency dispatch recieved a call from a man who said his girlfriend shot and killed herself. But the wound was not self-inflicted.

Investigators piece together evidence found at the scene of a Native American woman's murder; the tyre tracks and shoe impressions could lead them to the killer.

Experts seek answers to a young businesswoman's death just before she was to testify in a criminal trial.

An anonymous caller reports the rape and murder of a dry cleaner employee; two eyewitnesses tell two similar but not identical stories.

Police blame a botched robbery when an eccentric elderly millionaire is found dead, but the motive could be wrong.

A navy lieutenant is murdered while deployed out to sea; arsenic poisoning is the cause of death; investigators discover he had more than his fair share of enemies, but it takes years before investigators discover what really happened to him.

A building manager finds the lifeless body of a young woman in the bathtub; when questioned, an ex-con living downstairs lies to police; the lies do not prove murder and the case goes cold, then a new forensic tool examines the evidence.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Model Tara Lambert hires a hit man to kill her husband's ex-wife and put her in a wood chipper, but she doesn't know that cameras are rolling.

Chris Watts is convicted of murdering his wife and two daughters; secret videos document the chilling murders from start to finish, revealing lies, an affair and a cover-up.

Sasha Samsudean, 27, is found strangled to death in her luxury downtown Orlando, Fla., apartment; shocking surveillance video and a slew of clues ultimately lead investigators to the killer.

Beautiful college lacrosse player Yeardley Love is found murdered in her apartment, then the police arrest a member of a wealthy, prominent family, stunning the community.

Woman disappears from grocery store parking lot in Boulder, Colo.; investigators find extraordinary clues in a pair of bloody gloves, unique tire tracks, and ordinary grass and pine needles.

Retracing the steps of real investigations with interviews and dramatic re-creations as experts draw on forensic science to solve baffling crimes and other mysteries.

Police suspect a gay college student's slaying is a hate crime until forensic evidence points the case in another direction.

In a wealthy area of Philadelphia, police are called to the scene of what seems like a regular accidental drowning; the investigation begins to focus on one person who has many reasons to want the victim dead.

Two women are murdered in the same town and police fear a serial killer is on the loose, further investigation finds that they were both close to the same man.

A young woman is found dead on a golf course in the Bahamas; the grass on that course is so distinctive that it had evidentiary value; the evidence leds police to two suspects; each blamed the other, and they have to find out who the killer is.

A teenager goes missing after an evening of horseback riding; her body is found a month later, three miles from her home; the killer unknowingly leaves a trace of evidence behind, tiny but unmistakable clues that pointed to him and him alone.

When a popular disc jockey is found murdered in a community garden, police swing into action; a sniffer dog and a blood spatter expert led police to the killer and he'd been much closer than they realize.

Investigators unravel a twisted tale of lust, greed and deception after a woman claims her husband was gunned down by intruders.

Three seemingly unrelated deaths proved to be serial murders; the killer had been careful, he uses poison which had no taste or odour, fortunately for investigators, it also has a unique chemical signature.

A man is murdered in his sleep but no fingerprints are anywhere to be found; a shoe impression outside could lead to the killer.

With very little else to go on, investigators find that a show impression puts them on the right track to finding a killer in Lansing, Mich.

The owner of a restaurant is killed; investigators uncover tales of debt and deceit, but the case remains open, until one detective gets inspired by an earlier episode of "Forensic Files," and looks for clues in an empty holster.

A serial arsonist was on the loose in Washington, DC. Each of the fires was started with the same type of incendiary device. The perpetrator was very careful, and seemed to leave no evidence behind... but there were clues in the ashes and it was up to forensic scientists to find them.

A man becomes the prime suspect in his wife's death after forensic science raises questions about her apparent suicide.

Investigators on both sides of the Atlantic seek links between three homicides that look like professional executions.

Who put a bomb in the home of a 29-year-old woman and killed her?

A killer tried to destroy everything which could link them to the crime; but in doing so, they inadvertently created new forensic evidence, evidence which came to light using a technique never before used in a criminal investigation.

Two women are murdered in the same town and police fear a serial killer is on the loose, further investigation finds that they were both close to the same man.

A young woman is found dead on a golf course in the Bahamas; the grass on that course is so distinctive that it had evidentiary value; the evidence leds police to two suspects; each blamed the other, and they have to find out who the killer is.

A teenager goes missing after an evening of horseback riding; her body is found a month later, three miles from her home; the killer unknowingly leaves a trace of evidence behind, tiny but unmistakable clues that pointed to him and him alone.

When a popular disc jockey is found murdered in a community garden, police swing into action; a sniffer dog and a blood spatter expert led police to the killer and he'd been much closer than they realize.

Investigators unravel a twisted tale of lust, greed and deception after a woman claims her husband was gunned down by intruders.

Three seemingly unrelated deaths proved to be serial murders; the killer had been careful, he uses poison which had no taste or odour, fortunately for investigators, it also has a unique chemical signature.

A man is murdered in his sleep but no fingerprints are anywhere to be found; a shoe impression outside could lead to the killer.

With very little else to go on, investigators find that a show impression puts them on the right track to finding a killer in Lansing, Mich.

The owner of a restaurant is killed; investigators uncover tales of debt and deceit, but the case remains open, until one detective gets inspired by an earlier episode of "Forensic Files," and looks for clues in an empty holster.

A serial arsonist was on the loose in Washington, DC. Each of the fires was started with the same type of incendiary device. The perpetrator was very careful, and seemed to leave no evidence behind... but there were clues in the ashes and it was up to forensic scientists to find them.

A man becomes the prime suspect in his wife's death after forensic science raises questions about her apparent suicide.

Investigators on both sides of the Atlantic seek links between three homicides that look like professional executions.

Who put a bomb in the home of a 29-year-old woman and killed her?

A killer tried to destroy everything which could link them to the crime; but in doing so, they inadvertently created new forensic evidence, evidence which came to light using a technique never before used in a criminal investigation.

A murder victim's final moments are caught on tape; the crime scene looks like a clear robbery-murder; text evidence at first points to a jilted lover, but police identify a second suspect with a possible motive of deadly revenge.

A wounded woman crawls to call 911; her husband, who wants a divorce, gets a hard look from police, but he has an airtight alibi during the murder; forensic science of ballistics draws a direct connection.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Experts shed light on the shocking motive that prompted the Menendez brothers to murder their own parents, Jose and Kitty Menendez.

In a sensational, televised trial, Erik and Lyle Menendez were found guilty of murdering their parents; a shocking motive was behind the brothers' actions.

New theories emerge in the O.J. Simpson case, including a serial killer's confession, a possible hit man who claims responsibility for the murders.

New theories emerge in the O.J. Simpson case, including a serial killer's confession who may be a possible hit man who claims responsibility for the murders.

After a tycoon's wife is found dead in her SUV submerged in a half-frozen creek, police begin to suspect it wasn't an accident.

A Russian immigrant is found dead and a strange phone call to his office is the only lead investigators have.

Physical evidence intially condemns a prime suspect to a double homicide, but DNA from a discarded spoon points to another.

A child's death from flu-like symptoms triggers an investigation that ranges from the United States to Egypt and uncovers murder.

A couple is found dead in a car with broken windows but no shattered glass.

Key suspect has a solid alibi in the murder of a war veteran; but police get a lead by finding a new suspect with a sweet tooth.

A woman who appeared to have taken her own life told her sister that, if anything were to happen to her, there was a note in the china cabinet.

When an aspiring model turns up dead, police suspect her boyfriend. But must dig deeper for clues when he is cleared.

Tiny fibers and an asthma inhaler are the clues that lead officers to the killer of an off-duty policeman.

Investigators search the world of high rollers and offshore betting to solve the first triple homicide in Verona, Wisc.

Police search every apartment building in town when the body of a young girl found on an isolated farm holds a set of keys but no ID.

A man denies killing a pedestrian in hit-and-run, claiming he sold the car in question, and authorities track down the car to find critical evidence.

Three years later, a second autopsy determines who's right when a medical examiner and detectives disagree on the cause of death.

Hit-and-run boating accident that kills a popular young man causes investigators to search for one boat out of thousands.

A woman is found dead on her bedroom floor, the only clue is a bloodstained sheet; breakthrough forensics enable police to identify the killer.

A young man was killed in a mysterious car crash, but the evidence at the scene led investigators to believe it was not an accident; forensic science revealed what really happened, and the truth devastated three families.

A woman is found dead, police use blood evidence and computer forensics to convince a jury that the murderer is guilty.

When an elderly woman dies in an apparent robbery-homicide, evidence suggests the suspect broke out of the house rather than breaking in.

A couple is found dead in a car with broken windows but no shattered glass.

Key suspect has a solid alibi in the murder of a war veteran; but police get a lead by finding a new suspect with a sweet tooth.

A woman who appeared to have taken her own life told her sister that, if anything were to happen to her, there was a note in the china cabinet.

When an aspiring model turns up dead, police suspect her boyfriend. But must dig deeper for clues when he is cleared.

Tiny fibers and an asthma inhaler are the clues that lead officers to the killer of an off-duty policeman.

Investigators search the world of high rollers and offshore betting to solve the first triple homicide in Verona, Wisc.

Police search every apartment building in town when the body of a young girl found on an isolated farm holds a set of keys but no ID.

A man denies killing a pedestrian in hit-and-run, claiming he sold the car in question, and authorities track down the car to find critical evidence.

Three years later, a second autopsy determines who's right when a medical examiner and detectives disagree on the cause of death.

Hit-and-run boating accident that kills a popular young man causes investigators to search for one boat out of thousands.

A woman is found dead on her bedroom floor, the only clue is a bloodstained sheet; breakthrough forensics enable police to identify the killer.

A young man was killed in a mysterious car crash, but the evidence at the scene led investigators to believe it was not an accident; forensic science revealed what really happened, and the truth devastated three families.

A woman is found dead, police use blood evidence and computer forensics to convince a jury that the murderer is guilty.

When an elderly woman dies in an apparent robbery-homicide, evidence suggests the suspect broke out of the house rather than breaking in.

A religious woman is shot execution style in the suburbs of Michigan; surveillance video reveals it was trio of killers; eventually, detectives get a break: a handwritten note.

Three sex workers are murdered and left along a river; a serial killer was on the loose-and for years the perp was never identified.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

He is a sex offender and a murderer who attacks in a terrifying rage; this predator manages to evade capture for years, but he leaves evidence behind, his palm print; detectives are determined to put a face to the print.

When a house fire kills the only doctor in a small town, an arson investigation leads to the son of the doctor's nurse; when his alleged accomplice walks free, the prosecutor worries this might have been a miscarriage of justice.

A young woman is found murdered on the side of a rural driveway; the victim had been out with friends; the investigation would remain unsolved; until three decades later, when forensics from an unrelated crime helps break the case.

A hearing impaired 77-year-old on a road trip is shot to death because the man cannot hear his assailant's demands; random murders are among the hardest crimes to solve, but investigators are determined to bring this case to justice.

A massive explosion claims the life of a California farmhand, and authorities think it's an accidental death, but analysis of debris shows it's a bomb; investigators have few suspects until they hear ominous rumors about a jealous rage.

When a beautiful college student is stabbed to death in her Knoxville apartment, suspicion immediately falls on her roommate; a bloody shoe print left by the killer exposes a murderer with no history of violence and no reason to kill.

Numerous suspects emerge after someone starts targeting law enforcement officers in a peaceful Texas county.

An Illinois mother and her two young children are brutally murdered in their beds, and lurid threats are spray painted all over the walls of the crime scene.

Wealthy man is shot dead while his wife is forced to open their hidden safe, but they couldn't be identified because they were wearing ski masks.

The bomb was constructed to cause as much damage as possible and it did, killing the victim with deadly force and flame; a painstaking search yielded tiny clues, which identified the killer as surely as if he'd signed them.

A twelve-year-old girl claims that she was abducted and sexually assaulted. However, her story seems unbelievable until police discover fibers on her clothing.

Police are suspicious of numerous bloodstains when a woman has a fatal fall down the stairs.

A decade old case reopens, and a few seconds of a 911 call enable investigators to determine who is responsible for a murder.

A flawed envelope is an unlikely clue to identifying a killer who laced a water cooler with cyanide and caused the death of a woman.

A clue no bigger than a thumbtack leads investigators to a trio of killers.

For ten years, the disappearance of a college co-ed remained a mystery; new scientific testing cast a different light on a man who had been a suspect all along.

Tipster is found dead after revealing that a woman's death 16 years ago was murder.

The murder of 53-year-old Paul Gruber is examined and the evidence points to Darryl Robin Kuehl, who was later convicted of the crime.

Forensic science is used to determine if a woman's death was a botched robbery or intentional murder.

Detectives discover new clues left by a stalker's letter to his victim.

A killer is careless when using a murder weapon that is unique and easily traceable.

When a high school athlete is killed in a hit and run accident, investigators hoped tiny paint chips and shards of plastic would lead them to the driver.

A woman is abducted and a month later found dead, then a tip leads investigators in the right direction.

How the bombs were made leads investigators in Colorado to find the perpetrator.

DNA profiling reveals clues leading to a killer's identity 20 years later.

A device intended to save lives proves to be the only witness to a mans death.

A decade old case reopens, and a few seconds of a 911 call enable investigators to determine who is responsible for a murder.

A flawed envelope is an unlikely clue to identifying a killer who laced a water cooler with cyanide and caused the death of a woman.

A clue no bigger than a thumbtack leads investigators to a trio of killers.

For ten years, the disappearance of a college co-ed remained a mystery; new scientific testing cast a different light on a man who had been a suspect all along.

Tipster is found dead after revealing that a woman's death 16 years ago was murder.

The murder of 53-year-old Paul Gruber is examined and the evidence points to Darryl Robin Kuehl, who was later convicted of the crime.

Forensic science is used to determine if a woman's death was a botched robbery or intentional murder.

Detectives discover new clues left by a stalker's letter to his victim.

A killer is careless when using a murder weapon that is unique and easily traceable.

When a high school athlete is killed in a hit and run accident, investigators hoped tiny paint chips and shards of plastic would lead them to the driver.

A woman is abducted and a month later found dead, then a tip leads investigators in the right direction.

How the bombs were made leads investigators in Colorado to find the perpetrator.

DNA profiling reveals clues leading to a killer's identity 20 years later.

A device intended to save lives proves to be the only witness to a mans death.

Stories from across the world and refreshing conversations.

Stories from across the world and refreshing conversations.

From 1976 to 1977, David Berkowitz terrorizes New York City under his creepy self-given moniker: the "Son of Sam"; he is among the most infamous serial killers in American history.

In 1977, the city of New York is stalked by a seemingly faceless serial killer known as "Son of Sam"; after his final shooting takes him to Brooklyn, a twist of fate and a little luck leads to his capture.

He calls himself "B.T.K." which stands for "Bind, Torture, Kill" and for decades this bloodthirsty serial killer terrifies Wichita as he murders again.

For years the BTK killer plays a cat and mouse game with law enforcement and the media taunting them as he seeks the attention he craves.

The summer of 1985 was one of the hottest Los Angeles had seen in a century. But terrified residents weren't sleeping with the windows open; a killer known as the "Night Stalker" was on the loose.

A tip from a teenage boy leads to the identity of the Night Stalker and twenty-four hours later a mob of angry citizens track him down and capture him.

When a man dies after falling down the stairs, a witness says one thing and the evidence says another.

A wax bullet, white blanket and olive colored carpeting, tell a lot about the murder of a young woman found in a ravine.

When a house burns to the ground and a woman's charred remains are found, investigators must determine whether it was an accident or arson.

An ammunition box and fluorescent fibers reveal the betrayal that led to the murder of a millionaire's family.

The kidnapping of Adolph Coors leads to one of the most intense manhunts in US history.

A used tissue, 12 years after the murder of a young Missouri woman, may be what cracks the case with a suspect list a mile long.

When murder strikes a young girl, police quickly make an arrest, but cutting-edge technology from NASA proves they have the wrong suspect behind bars.

A man is found strangled and burned in his San Antonio apartment and the killer thinks he has destroyed all the evidence.

When two men appear to die of heart disease six years apart, police notice they have one thing in common - they were each married to the same woman.

Casino security cameras offer the final images of a woman just before she vanished without a trace.

A squashed tomato and a pinpoint reflection of light in a photo help catch a killer.

An ATM transaction allows Texas detectives to pinpoint a suspect in the slaying of a teacher, but a shoelace stolen from the victim's home proves to be the tie that binds her killer to the crime.

Ten years after the murder of a rock singer, forensic scientists use evidence collected to finally bring her killer to justice.

After a Michigan State University grad student disappears and is presumed dead, a professor of geological sciences helps police get the "dirt" on her killer.

When a man's wife kills herself 14 years after his college sweetheart committed suicide, police start to get suspicious.

A woman shot in her driveway had recently rejected a co-worker half her age.

A pair of tennis shoes are found near a victim who had been stabbed on the beach, less than ten yards from her hotel.

Three fingerprints on a window screen are enough for a print examiner to uncover the work of a serial killer.

The kidnapping of Adolph Coors leads to one of the most intense manhunts in US history.

A used tissue, 12 years after the murder of a young Missouri woman, may be what cracks the case with a suspect list a mile long.

When murder strikes a young girl, police quickly make an arrest, but cutting-edge technology from NASA proves they have the wrong suspect behind bars.

A man is found strangled and burned in his San Antonio apartment and the killer thinks he has destroyed all the evidence.

When two men appear to die of heart disease six years apart, police notice they have one thing in common - they were each married to the same woman.

Casino security cameras offer the final images of a woman just before she vanished without a trace.

A squashed tomato and a pinpoint reflection of light in a photo help catch a killer.

An ATM transaction allows Texas detectives to pinpoint a suspect in the slaying of a teacher, but a shoelace stolen from the victim's home proves to be the tie that binds her killer to the crime.

Ten years after the murder of a rock singer, forensic scientists use evidence collected to finally bring her killer to justice.

After a Michigan State University grad student disappears and is presumed dead, a professor of geological sciences helps police get the "dirt" on her killer.

When a man's wife kills herself 14 years after his college sweetheart committed suicide, police start to get suspicious.

A woman shot in her driveway had recently rejected a co-worker half her age.

A pair of tennis shoes are found near a victim who had been stabbed on the beach, less than ten yards from her hotel.

Three fingerprints on a window screen are enough for a print examiner to uncover the work of a serial killer.

Stories from across the world and refreshing conversations.

Stories from across the world and refreshing conversations.

Melanie Zanona; Catherine Lucey; Isaac Arnsdorf.

Mike Williams mysteriously disappears on his wedding anniversary, and it looks like he may have been eaten by alligators, but looks can be deceiving; a break in the case reveals secrets.

Colorado soccer mom Paige Birgfeld vanishes and a small town is left on edge; cops dig for clues and make a shocking discovery that this devoted mom is living a secret double life.

Churchgoers know something is up when pastor Matthew Winkler doesn't show up for services: he's found dead on his bedroom floor and twisted sex fantasies and dark family secrets start to surface.

A successful lawyer, Mormon family man, and father of five is shot down in cold blood at a Walgreens parking lot, but a closer look reveals a dirty office affair that turned into a dangerous game of Russian roulette.

Tattoo shop owner Dennis Abrahamsen is found brutally murdered and naked on a massage table in his home; evidence tells a story of a wild sex party gone wrong with a famous adult actress.

With a long list of suspects, forensic experts agree on one thing in this brutal murder: the killer knew his victim.

The only lead to finding a serial killer on the loose is a bloody fingerprint on the body of a victim.

Groundbreaking tests reveal the race, eye color and hair color of the person responsible for killing two young women on Halloween night.

A convicted arsonist claims his innocence and with no lawyer, no money and only a fifth-grade education, sets out to prove it.

A canine behaviorist uses the family dogs, who are the only witnesses, to find the murderer of their owner.

Investigators see through a killer trying to cover his tracks by staging the crime scene to learn what really happened.

A young girl beaten after watching her grandmother killed, identifies the wrong person; years later she tries to change her statement.

In 1984 police failed to convict the murderer of a college student. New technology may finally help the police to catch her killer.

Police investigate a young woman found murdered two weeks after reporting a road rage incident; evidence leads not to the aggressive driver, but one of their own.

When a single mother is murdered, her brother vows to find the person responsible for the death of his sister - even if it takes more than 30 years.

A husband and wife get shot and their 16-year-old daughter manages to escape, but investigators suspect she may be involved in the murder.

After 10 years, a witness decides to do the right thing about the rape and murder of a young hairdresser.

Police investigate the possibility of a hate crime when two women go missing and are later found murdered.

When a human skeleton is found on marshland and determined to be at least 18 months old, an inventive computer consultant gives her a face and name.

A killer places all the incriminating evidence to the murder in a plastic bag, hoping it will float down the river.

A woman's body is found inside a burned mobile home and the autopsy reveals she was beaten, making this a murder.

Security guard who disappeared from his post was found a year later in a remote camp site; a decade later, a phone call and a paint smear on his boot helped scientists determine what happened during his final moments.

When three students are brutally murdered close to campus, investigators must determine what the women had in common before their serial killer strikes again.

A canine behaviorist uses the family dogs, who are the only witnesses, to find the murderer of their owner.

Investigators see through a killer trying to cover his tracks by staging the crime scene to learn what really happened.

A young girl beaten after watching her grandmother killed, identifies the wrong person; years later she tries to change her statement.

In 1984 police failed to convict the murderer of a college student. New technology may finally help the police to catch her killer.

Police investigate a young woman found murdered two weeks after reporting a road rage incident; evidence leads not to the aggressive driver, but one of their own.

When a single mother is murdered, her brother vows to find the person responsible for the death of his sister - even if it takes more than 30 years.

A husband and wife get shot and their 16-year-old daughter manages to escape, but investigators suspect she may be involved in the murder.

After 10 years, a witness decides to do the right thing about the rape and murder of a young hairdresser.

Police investigate the possibility of a hate crime when two women go missing and are later found murdered.

When a human skeleton is found on marshland and determined to be at least 18 months old, an inventive computer consultant gives her a face and name.

A killer places all the incriminating evidence to the murder in a plastic bag, hoping it will float down the river.

A woman's body is found inside a burned mobile home and the autopsy reveals she was beaten, making this a murder.

Security guard who disappeared from his post was found a year later in a remote camp site; a decade later, a phone call and a paint smear on his boot helped scientists determine what happened during his final moments.

When three students are brutally murdered close to campus, investigators must determine what the women had in common before their serial killer strikes again.

A young Texas teenager and her boyfriend are brutally attacked on Valentine's Day; she is found dead while her boyfriend escapes; the case goes cold for nearly 50 years before a new forensic test exposes a family man with a dark secret.

Three Indiana construction workers are found shot on a work site.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Desperate for answers community members live in terror waiting for the man dubbed the Co-Ed Killer to strike again.

In April 1973, Edmund Kemper, 24, murders six coeds in and around the city of Santa Cruz, Calif., shaking the community to its core.

The story of the millionaire heir to a vast real estate fortune who has been linked to the deaths of his wife, his best friend, and his neighbor.

Six weeks after jumping bail in Galveston, Texas, Robert Durst is caught on a store security camera in Pennsylvania shoplifting a sandwich and is quickly sent back to Galveston to stand trial for the murder of his neighbor, Morris Black.

Police get a big break when Mother Nature aids their investigation into the murder of a woman at her business.

Eyewitness to real estate agent's murder is put under forensic hypnosis in an attempt to help him recall the killer's face.

Police launch a search for a killer after a teenager returns home to find his father's body in a pool of blood.

Pathologist examining the death of a politician who was running for re-election finds tiny puncture wounds at the autopsy.

A Naval officer who threatened to go public with tales of on-the-job sexual harassment and assault is brutally murdered, but when investigators find the allegations could be part of an elaborate scheme for money, they turn to forensic science.

A few drops of blood are the only clues a man's female killer leaves behind, but years later and hundreds of miles away investigators hear an intriguing story about an exotic dancer who got away with murder.

After police identify a murder victim thanks to her butterfly necklace, they discover several co-workers had vendettas against the victim.

The brutal murder of a construction site foreman looks like the work of a disgruntled employee, but forensic science points to an unlikely suspect.

A shooting victim mutters the name of her apparent assailant before dying, but fingerprint comparisons, handwriting analysis, ballistics and DNA testing show someone else close to home is the true killer.

A woman tells investigators that a man broke into her home wearing only underwear and gloves, killed her boyfriend, and raped and terrorized her.

After a Delaware man's mother is found dead, he tells a story that's so improbable police think it can't possibly be true.

A family vacation turns into a terrifying search for a missing wife and baby, then becomes a manhunt for a killer who committed a horrific crime.

A DNA dragnet catches a killer eight years after the kidnapping, rape and murder of a college coed in Oklahoma.

A nosy neighbor with a disturbing obsession becomes a suspect in a woman's murder at an upscale apartment complex; police discover an incredible link to an unrelated murder thousands of miles away.

A college student turns up dead and her boyfriend becomes a prime suspect when blood splatters are discovered on his wall.

Texas police hunt frantically for a brutal rapist. No one knows where he'll strike next, but given the increasingly violent nature of his crimes, he must be found soon.

When detectives find a mismatched button in relation to a woman's death, they know they can follow the clue back to the killer.

A woman heads home after church, but never makes it there alive, triggering a homicide investigation.

A Naval officer who threatened to go public with tales of on-the-job sexual harassment and assault is brutally murdered, but when investigators find the allegations could be part of an elaborate scheme for money, they turn to forensic science.

A few drops of blood are the only clues a man's female killer leaves behind, but years later and hundreds of miles away investigators hear an intriguing story about an exotic dancer who got away with murder.

After police identify a murder victim thanks to her butterfly necklace, they discover several co-workers had vendettas against the victim.

The brutal murder of a construction site foreman looks like the work of a disgruntled employee, but forensic science points to an unlikely suspect.

A shooting victim mutters the name of her apparent assailant before dying, but fingerprint comparisons, handwriting analysis, ballistics and DNA testing show someone else close to home is the true killer.

A woman tells investigators that a man broke into her home wearing only underwear and gloves, killed her boyfriend, and raped and terrorized her.

After a Delaware man's mother is found dead, he tells a story that's so improbable police think it can't possibly be true.

A family vacation turns into a terrifying search for a missing wife and baby, then becomes a manhunt for a killer who committed a horrific crime.

A DNA dragnet catches a killer eight years after the kidnapping, rape and murder of a college coed in Oklahoma.

A nosy neighbor with a disturbing obsession becomes a suspect in a woman's murder at an upscale apartment complex; police discover an incredible link to an unrelated murder thousands of miles away.

A college student turns up dead and her boyfriend becomes a prime suspect when blood splatters are discovered on his wall.

Texas police hunt frantically for a brutal rapist. No one knows where he'll strike next, but given the increasingly violent nature of his crimes, he must be found soon.

When detectives find a mismatched button in relation to a woman's death, they know they can follow the clue back to the killer.

A woman heads home after church, but never makes it there alive, triggering a homicide investigation.

A Texan who vows to live a reformed life after being released from prison is subsequently convicted of murder, despite insisting his innocence, so he uses forensic science from behind bars to try to prove his case.

An extremely successful California career woman keeps falling ill and doctors can't determine why, then after she dies they still have no explanation until they find a key figure in her life has been lying about his past.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Revelations of what Michael Jackson's children and staff witnessed prior to his death and an investigation into the claims that Jackson took his own life.

Revelations of what Michael Jackson's children and staff witnessed prior to his death and an investigation into the claims that Jackson took his own life.

Investigating a wide range of suspects and evidence in the killing of JonBenet Ramsey.

Investigating a wide range of suspects and evidence in the killing of JonBenet Ramsey.

Volunteers and police spend weeks searching for a missing girl. A psychic later leads them to a field where the body was found.

Forensic investigators try to stop a killer who is apparently responsible for two slayings in a community in South Carolina.

When DNA proves that a man who practically admits to a brutal attack is innocent, police wonder why he was willing to take the blame.

When a businessman is murdered, motives and suspects are plentiful. Was it simply a disgruntled employee or client? Or do some racy photos hold the clue to the crime?

A family break turns into a nightmare when the wife is found face-down in a lake. With no idea whether it was murder, an accident or suicide, police turn to a new forensic technique.

When friends see a woman in the back of a car flailing her arms and screaming, they assume she is having fun, but when they later come upon a jacket and a pool of blood, they realize they witnessed an abduction in progress.

An attack on a couple's home leaves the husband dead, the wife gravely injured and their son as a prime suspect; hundreds of miles away, a DNA sample may lead to the killer.

Detectives think they've solved a murder when they find the weapon and victim's blood in a man's flat, but the evidence may have been planted.

Detectives search for the bombers of two churches in Illinois, hoping that the materials used in the remnants of the handmade bombs will offer the clues to catch the culprits.

Initially, there were no clues in the murder of Florida college student Michelle Herndon, until a small needle mark was found on the victim's arm.

A woman is stabbed a hundred times and her body positioned in a suggestive manner. This could be a hate crime against women.

Police are able to create a composite sketch of a man burnt beyond recognition. But tracking the killer is more challenging.

By cutting a strand of a murdered man's hair into sections, forensics reveal a record of his last six months alive, and find he was frequently ingesting huge amounts of arsenic.

A bullet-riddled car, a missing driver, and no witnesses. An ambush or a random attack? The clue was something so tiny, it was measured in millionths of a meter.

Teenager is found half-naked with her throat slit. A single foreign hair found on her thumb may finger the killer.

Unsettling evidence is found in the rubble from a fire in a Seattle woman's apartment that is soon followed by another blaze just 100 feet from the first, with clues indicating a serial killer is at work.

Weeks after a student vanishes, the body of an unknown female is found in the ashes of a fire 700 miles away; an alert policeman realizes the crimes could be connected.

Investigators face a growing list of suspects after a beautiful flight attendant is brutally murdered in her own home.

A family break turns into a nightmare when the wife is found face-down in a lake. With no idea whether it was murder, an accident or suicide, police turn to a new forensic technique.

When friends see a woman in the back of a car flailing her arms and screaming, they assume she is having fun, but when they later come upon a jacket and a pool of blood, they realize they witnessed an abduction in progress.

An attack on a couple's home leaves the husband dead, the wife gravely injured and their son as a prime suspect; hundreds of miles away, a DNA sample may lead to the killer.

Detectives think they've solved a murder when they find the weapon and victim's blood in a man's flat, but the evidence may have been planted.

Detectives search for the bombers of two churches in Illinois, hoping that the materials used in the remnants of the handmade bombs will offer the clues to catch the culprits.

Initially, there were no clues in the murder of Florida college student Michelle Herndon, until a small needle mark was found on the victim's arm.

A woman is stabbed a hundred times and her body positioned in a suggestive manner. This could be a hate crime against women.

Police are able to create a composite sketch of a man burnt beyond recognition. But tracking the killer is more challenging.

By cutting a strand of a murdered man's hair into sections, forensics reveal a record of his last six months alive, and find he was frequently ingesting huge amounts of arsenic.

A bullet-riddled car, a missing driver, and no witnesses. An ambush or a random attack? The clue was something so tiny, it was measured in millionths of a meter.

Teenager is found half-naked with her throat slit. A single foreign hair found on her thumb may finger the killer.

Unsettling evidence is found in the rubble from a fire in a Seattle woman's apartment that is soon followed by another blaze just 100 feet from the first, with clues indicating a serial killer is at work.

Weeks after a student vanishes, the body of an unknown female is found in the ashes of a fire 700 miles away; an alert policeman realizes the crimes could be connected.

Investigators face a growing list of suspects after a beautiful flight attendant is brutally murdered in her own home.

The body of a 24-year-old criminology student is found wrapped in a blanket alongside a desolate road in Brooklyn, N.Y.; police discover that the bouncer at a bar is her killer.

When a 79-year-old woman is found shot to death in her home, investigators initially suspect her husband or a violent neighbor; shell casings recovered at the scene and a high-tech database reveal an unlikely killer.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Lululemon employee Jayna Murray is found stabbed to death inside one of the company's Washington, DC stores and her co-worker is found bound and bleeding in a room; different suspects emerge and evidence starts to point to someone on the inside.

Stephen Paddock lived the lifestyle of the rich and famous in Las Vegas until he killed fifty-eight people in October 2017.

When five family members are found brutally murdered in the small Okla. city of Broken Arrow, police search for a mass murder.

Savanna Greywind couldn't wait to be a mom, but just before her baby is due, the pregnant 22-year-old disappears from her own apartment; when the baby turns up alive, the investigation reveals a suspect close to home.

Forensics investigate a clever inside job, in which finger prints, CCTV and DNA testing provide the keys to catching a thief and killer.

Florida authorities rely on DNA evidence to try to nail the killer of a woman who was abducted from her late-night job at a convenience store, raped and strangled.

A wild fire in a secluded parking lot leads police to discover a dreadful homicide, with the suspect's image caught by security cameras.

After a prominent Arizona surgeon is found stabbed to death outside his office, investigators uncover an unlikely suspect with deep pockets and an even deeper hatred for the doctor.

Police don't have a basis for comparison to match shoe impressions, blood drops and DNA evidence from a murder scene.

A masked gunman kills two members of a family and wounds two others after they interrupt his burglary at their upscale suburban home.

A killer leaves equally incriminating evidence at the scene when he meticulously wipes away his fingerprint and shoe impressions.

After a woman is found dead at a yacht club in California in an apparent case of love gone wrong, investigators discover her home life was as dramatic as films made in nearby Hollywood.

The brutal murder of a state park employee over $2,000 rattles her co-workers and tourists while leaving police to sift through hundreds of leads.

When evidence shows a woman's rape and murder, police must find the killer as well as the victim.

A week after a couple disappears from the beach, police get a mysterious lead from a robbery.

Fifteen years later, DNA technology leads to justice for a murdered woman and her savagely beaten 4-year-old daughter.

A quiet waitress who hasn't been to work in two days vanishes without a trace; police suspect a date gone wrong.

The search for a missing exotic dancer led police to an isolated 75-acre site where someone had been shot and cremated, thus destroying all evidence... almost; piece of a foot provided enough DNA for a genetic profile and positive ID.

After years of suffering domestic abuse, a young woman is found murdered in her bathtub; among numerous clues, a hamburger bun proves the most incriminating.

Evidence that includes threatening emails, a missing person and an abandoned truck lead police to a woman's suspected killer, but they don't have the victim's body.

A woman has an accidental fall down a flight of stairs and appears to have hit her head, but the lack of blood splatter and misplaced shoes lead police to believe the fall was staged.

A church member gets gunned down after leaving choir practice; although witnesses see little and not much evidence exists, investigators learn that she had been having affairs for years.

Police don't have a basis for comparison to match shoe impressions, blood drops and DNA evidence from a murder scene.

A masked gunman kills two members of a family and wounds two others after they interrupt his burglary at their upscale suburban home.

A killer leaves equally incriminating evidence at the scene when he meticulously wipes away his fingerprint and shoe impressions.

After a woman is found dead at a yacht club in California in an apparent case of love gone wrong, investigators discover her home life was as dramatic as films made in nearby Hollywood.

The brutal murder of a state park employee over $2,000 rattles her co-workers and tourists while leaving police to sift through hundreds of leads.

When evidence shows a woman's rape and murder, police must find the killer as well as the victim.

A week after a couple disappears from the beach, police get a mysterious lead from a robbery.

Fifteen years later, DNA technology leads to justice for a murdered woman and her savagely beaten 4-year-old daughter.

A quiet waitress who hasn't been to work in two days vanishes without a trace; police suspect a date gone wrong.

The search for a missing exotic dancer led police to an isolated 75-acre site where someone had been shot and cremated, thus destroying all evidence... almost; piece of a foot provided enough DNA for a genetic profile and positive ID.

After years of suffering domestic abuse, a young woman is found murdered in her bathtub; among numerous clues, a hamburger bun proves the most incriminating.

Evidence that includes threatening emails, a missing person and an abandoned truck lead police to a woman's suspected killer, but they don't have the victim's body.

A woman has an accidental fall down a flight of stairs and appears to have hit her head, but the lack of blood splatter and misplaced shoes lead police to believe the fall was staged.

A church member gets gunned down after leaving choir practice; although witnesses see little and not much evidence exists, investigators learn that she had been having affairs for years.

A young single mother is abducted from a gas station and is later found stabbed to death near an oil field; the detectives use shoe and tire impressions to weed out numerous suspects.

When a 23-year-old Marine dies in his bedroom, doctors initially believe a heart attack is to blame; when arsenic is found in his organs, his wife is charged with murder; a sharp attorney and toxicological testing uncover the truth.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Examining the factors that led to the crash that killed John F. Kennedy Jr. and a never before seen interview with a person who may have been the last person to speak to JFK Jr, moments before the crash.

Examining the factors that led to the crash that killed John F. Kennedy Jr. and a never before seen interview with a person who may have been the last person to speak to JFK Jr, moments before the crash.

Ted Kacyznski's brother, the man who ultimately turned him in to the authorities, discusses the hunt that led to the capture of the Unabomber.

The chilling account of a man who survived his encounter with the notorious serial killer, who managed to evade police scrutiny for years.

When a man perishes in a fire while working in his garage, his death is initially ruled an accident until a forensic odontologist changes the direction of the case.

Lack of evidence compels investigators to look beyond the obvious when a woman is beaten to death at her in-laws house.

A man is found dead of an apparent suicide. But soon after, information emerges which reveals a much more menacing scenario.

A dismembered body is dumped on the side of the New Jersey Turnpike and before police realize it, bodies are turning up between two states.

A young bride-to-be is gunned down in her own home. The attack is personal and as investigators start digging, they uncover the man she loved was living a lie.

Tara Munsey went missing after a work shift at a Virginia restaurant and it is unknown if she ran away or if she was the victim of foul play.

An Ohio woman and her two daughters go missing while vacationing in Florida; their corpeses are found floating in Tampa Bay with a hand-written note by one of the victims; putting it on five billboards helps them find the killer.

Four young adults are murdered in an affluent Texas neighborhood, with little evidence but two people walking by dressed in black.

A young college student is found dead in her apartment and the autopsy rules the death a homicide by an unknown male suspect.

The killer removed the computer that links him to the murder of a woman and her soon-to-be ex-husband that he had met online.

A community is shocked when police discover a woman raped and murdered in broad daylight on a public trail.

A real estate developer is shot and his wife becomes the prime suspect, until the bullet is linked to a weapon reported missing 20 years ago.

A body is found stuffed into a suitcase forcing the police to search though the landfill for another missing victim.

A woman goes missing for a month with the only clues being a set of keys, a fingerprint and a code.

Police discover a mask near the crime scene and hope that it leads to the killer of a funeral director.

A killer assaults a young mother in her home, but despite meticulous washing of the crime scene, a single hair remains to lead authorities to the culprit.

The investigation into the disappearance of flight attendant Helle Crafts leads to the murder conviction of her pilot husband.

Scientists and detectives use DNA to solve a string of rapes and murders.

A young bride-to-be is gunned down in her own home. The attack is personal and as investigators start digging, they uncover the man she loved was living a lie.

Tara Munsey went missing after a work shift at a Virginia restaurant and it is unknown if she ran away or if she was the victim of foul play.

An Ohio woman and her two daughters go missing while vacationing in Florida; their corpeses are found floating in Tampa Bay with a hand-written note by one of the victims; putting it on five billboards helps them find the killer.

Four young adults are murdered in an affluent Texas neighborhood, with little evidence but two people walking by dressed in black.

A young college student is found dead in her apartment and the autopsy rules the death a homicide by an unknown male suspect.

The killer removed the computer that links him to the murder of a woman and her soon-to-be ex-husband that he had met online.

A community is shocked when police discover a woman raped and murdered in broad daylight on a public trail.

A real estate developer is shot and his wife becomes the prime suspect, until the bullet is linked to a weapon reported missing 20 years ago.

A body is found stuffed into a suitcase forcing the police to search though the landfill for another missing victim.

A woman goes missing for a month with the only clues being a set of keys, a fingerprint and a code.

Police discover a mask near the crime scene and hope that it leads to the killer of a funeral director.

A killer assaults a young mother in her home, but despite meticulous washing of the crime scene, a single hair remains to lead authorities to the culprit.

The investigation into the disappearance of flight attendant Helle Crafts leads to the murder conviction of her pilot husband.

Scientists and detectives use DNA to solve a string of rapes and murders.

When an 18-year-old girl is abducted while talking on a pay phone, forensic evidence found on her clothing points police in the direction of a suspect who shockingly confesses that he didn't act alone.

In the story of a Los Angeles kidnapping, ransom and murder ring, retired scientists use sonar equipment to locate victims at the bottom of a reservoir.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

The anchors share the latest stories about significant events that take place across the world and interview prominent figures.

Patients at the VA Hospital in Clarksburg, W.Va., keep dying after experiencing shockingly low blood sugar levels; an investigation into their deaths reveals an overnight nurse was injecting patients with lethal doses of insulin.

A 70-year-old retired veteran is found dead on his boat after a bad sea storm; detectives discover he was killed during an attempted robbery after winning $400 in keno.

A Texas love triangle turns deadly, and it appears to be an open-and-shut case until technology tells the tale.

After the discovery of the brutal murder of an 18-year-old desk clerk of a beachfront condo, analysts use brand-new mitochondrial DNA technology to prove the killer's identity.

A 33-year-old West Virginia husband and father seemingly dies in an accidental house fire; a closer look at the scene reveals a more sinister case.

July Fourth weekend leads to tragedy for a California family; to catch a killer, detectives utilize an unorthodox technique - analyzing bug fragments - to help put a murderer behind bars.

A family mourns the unexpected death of a beloved grandmother at Christmas, and while local police assure everyone that she was the victim of a tragic accident and that there is no foul play, some things about the scene don't add up.

When a true crime hobbyist connects a Utah Jane Doe to an Ohio missing persons case, detectives are hard-pressed to solve the decades-old murder.

Police believe they have a serial rapist and murderer, but DNA testing and research leads to another arrest and conviction.

In 1976, 182 war veterans in Philadelphia become hospitalized with pneumonia-like symptoms and 29 die; the disease resurfaces every few years.

After a wealthy Southern physician gets murdered with a baseball bat, his wife and a handyman become convicted of the crime.

In 1971, John List disappears after murdering his mother, wife and three children; he eludes the law for years until an age-scaled sculpture of the suspect and a true-crime TV program helps lead to his arrest in 1989.

An 11-year-old boy comes down with a fever and diarrhea after eating an undercooked burger; when his condition worsens, his mother drives him to a hospital and doctors discover E. coli destroying his body.

Florida police search for a serial rapist and murderer who left small red fibers on each of his 10 victims.

When an English couple go missing, police suspect their son killed them and must rely on mud and blood samples found in the couple's two cars to find their bodies.

Experts attempt to discover the source of heavy fog on Highway I-75 in Tennessee, which caused a 99-car accident and 12 deaths.

When a woman goes missing from her home, police focus on her husband when an airline luggage tag and luminol point to an affair and murder; footage from a TV crew and Coast Guard photographs lead investigators to the suspect's missing boat.

When a woman exhibits strange flu-like symptoms before dying, investigators discover someone added thallium to her soda; detectives initially suspect her husband, but the case takes a sinister turn.