When Cara Ryan shoots her ex-husband and accuses him of threatening to kill her, police question her motive.

When Cara Ryan shoots her ex-husband and accuses him of threatening to kill her, police question her motive.

The father of an Alabama teenager calls the police after he returns home to find his son had thrown a party, leaving the place trashed; 11 minutes after the deputy leaves the house, another 911 call is placed reporting a shooting at the residence.

After the battered body of a young woman is found dumped at a landfill in Lubbock, Texas, detectives race to collect evidence hidden in acres of trash.

Investigators in Prince George's County, Md., are chasing the shadow of a brutal killer who is targeting mothers and daughters; their investigation brings them face to face with a predator.

Investigators believe a young woman left of her own accord, but her mother is convinced that someone close to her is hiding a big secret; a two-year search for the truth brings investigators to the backyard of a historic location.

While attempting to identify the remains of a victim found buried in the backyard of a plush California home, investigators learn another murder was committed at the exact same residence 30 years earlier.

When two female college students go missing, their whereabouts remain unknown for months, until a parole officer recalls startling information that would lead investigators to the backyard of a remote property.

Laura Coates delves into the tragic 1975 murder of 15-year-old Martha Moxley to learn about a mother's quest for justice, what the crime scene and autopsy reveal about the killer, and how a break in the 23-year cold case ends in arrest.

A new look at Michael Skakel's 2002 trial to learn how prosecutors put him in jail, how defense lawyers got him out in 2013, and how a potential clue hints that two people might have killed Martha Moxley.

Laura Coates delves into new theories about the 1975 murder of Martha Moxley, how Robert F. Kennedy Jr. investigated a potential eyewitness, and how Martha's mother copes without justice.

An African immigrant is found tortured and murdered in his West End home; Atlanta detectives uncover a string of violent crimes tied to a terrifying criminal syndicate that the team must take down to restore peace to the Big Peach.

An Atlanta civil rights icon is shot dead in his front yard and police must determine if his high-profile stature may have made him a target; as detectives race to find the killer, the pressure is on to bring justice to this fallen hero.

Brittany Eldridge was nearly nine months pregnant when she was found dead in her apartment; investigators focused on two men they believed had a possible motive.

For the Jennings family, Christmas Eve becomes a waking nightmare after a gunshot rings out, and investigators must determine whether a secret led to suicide or murder.

What happened in Cara Ryan's bedroom is a mystery; she admits she shot her ex-husband, but investigators need to know if it was murder or self-defense; detectives hear several versions of the story, but for a jury, there is only one truth.

When a captivating, sweet-natured single mom is found dead in her garage, detectives in Frisco, Texas, uncover a series of potential suspects, all of them connected in different ways to her complicated and secretive life.

Police believe a pair of double homicides in Nebraska, five years apart, might be connected; investigators working to solve the crimes fear the killer might strike again.

Diana Lovejoy and her husband welcome a baby boy, but their marriage crumbles; a bitter custody battle follows; fearing for her safety, Diane turns to a man skilled in self-defense, but as it turns out, someone else is in grave danger.

Popular high school senior Chris Daigle mysteriously disappears from Missouri City, Texas; for nearly a decade, his mother will stop at nothing to get answers while keeping friends close but enemies closer.

When Melissa Henderson is found dead in her bed, a perplexing mystery ensues; her husband and family believe her death is from natural causes, but the clues lead investigators to a secret life of spying and jealousy and ultimately to a killer.

A mother of three married to a missionary is found dead on Valentine's Day; the investigation into the murder reveals answers close to home.

A mother of three married to a missionary is found dead on Valentine's Day; the investigation into the murder reveals answers close to home.

Investigators didn't know if Kathy Heckel was a missing person or murder victim; decades later the case is reopened by a new detective.

When a free-spirited young woman is found murdered in her kitchen, police in Chicopee, Mass., have no shortage of suspects; detectives realize the clue that leads to her killer is actually hidden in plain sight.

When a single mother's car is found abandoned on a lone stretch of highway in Illinois, detectives are forced to turn to forensic evidence to piece together the secrets of her disappearance.

In Wisconsin, a mother makes an unimaginable discovery following a cast party; suddenly, a close circle of friends is under suspicion for murder; as detectives work quickly to unravel this mystery, another vicious attack may lead them to the killer.

In Hamburg, N,Y., employees at the local Toys R Us are faced with the unthinkable when one of their own is savagely killed during an otherwise typical nightshift; suddenly, every co-worker is a suspect, but one may be masking as a murderer.

Trick-or-treaters in a small Indiana town have no idea that the sweet grandmother passing out candy is also hiding a deadly secret in her garage.

The horrific murder of a young mother on Halloween night sends California investigators on the hunt for a costumed killer.

On Halloween night a knife-wielding intruder attacks and kills two roommates and leaves another lucky to be alive; although the story is reminiscent to the plot of a horror film, the terror is all too real.

Halloween becomes a real-life horror story when police discover a beloved mother of four murdered; the panic intensifies as the investigation turns into a case populated by demons, masks and a potential psychopath on the loose.

After a massive Halloween bash ends with a young woman's mysterious disappearance, a tiny farming town fears that evil stalks its fields.

As Halloween approaches in southern California, a family of three mysteriously goes missing; during their search for answers, investigators unearth a haunting message that points to murder.

A veteran police officer is gunned down in the line of duty; detectives make it their mission to bring his killer to justice; as they investigate a troubled Philadelphia suburb, they soon uncover a crime of the ultimate betrayal.

Meghan Verikas is attracted to Leon Jacob, in part, because as a doctor he saves lives; police officers tell her he is trying to hire a hit man, potentially to take hers, but authorities have a plan of their own.

Sam and Danielle Dreher appear to have a storybook marriage, but this ending was not happily ever after; when Sam is murdered, investigators discover a twisted tale of secrets, lies and infidelity.

A group of adventurous Americans think they found paradise in a tropical hideaway, the kind of place where people don't ask a lot of questions about their neighbors, until some of those neighbors start to disappear.

Days after Lauren Giddings vanished, her body was discovered steps from her apartment; to catch her killer, detectives had to untangle a confusing web of clues and find a piece of evidence no one was supposed to see.

When Detective Bill Clark investigates a disappearance, a trail of clues leads him to a young film director; Clark worries that the mystery was a hoax staged by a master storyteller; however, it turns out the script is much darker.

In Wisconsin, Steven Avery and his nephew, Brendan Dassey, are convicted of killing Teresa Halbach in a case that defies easy answers.

It is just before Halloween; Joel Lovelien and his fiancé head to a local bar packed with people in costume; Joel steps outside and walks into a troubling mystery.

Rachel Buffett, whose former fiance, Daniel Wozniak, was convicted of two grisly murders, talks about being at the center of the investigation.

Rachel Buffett, whose former fiance, Daniel Wozniak, was convicted of two grisly murders, talks about being at the center of the investigation.

Karen Smith is murdered while her 5-year-old son is brutally stabbed and a neighbor says she knows who did it; she later recants her testimony and fights for the suspect's defense.

Detectives in Florida are working to identify the body of a young woman found floating in a river. The sheer brutality of the murder and endless pool of potential suspects leaves investigators puzzled until they uncover a silent witness to the crime.

Petty Officer Amanda Snell is found dead in her room on the base; NCIS is split as to whether her death was an accident or foul play; her killer's insatiable quest for his next victim brings the shocking truth to light.

In Woonsocket, R.I., women are disappearing at an alarming rate; experts analyze the actions of an utterly unsuspicious, highly organized serial killer who nearly got away with it.

In Flint, Michigan, someone randomly stabs men to death on the city streets.

In Missouri, Bobbie Jo Stinnett is killed, with her unborn baby cut out.

When an athletic and popular college student is violently murdered in her apartment, police track down several surprising suspects, including one with a disturbing obsession, before crucial evidence unmasks a dangerous predator no one saw coming.

A fun-loving 59-year-old man is found shot to death in his home and his beloved jewelry collection has been stolen, leading detectives to a long list of suspects and a killer harboring a dark secret.

A restaurant is robbed and the night manager murdered, leading police to investigate suspicious co-workers, a disgruntled ex-employee and a violent serial attacker.

When the body of a newlywed is spotted at the base of a cliff in Glacier National Park, local and federal authorities join forces for an investigation that will put their skills to the ultimate test.

After a beloved father vanishes, his family and the police work tirelessly for four years to find him; a familiar witness comes forward and leads detectives to finally expose a diabolical conspiracy which may have been paid for by sexual favors.

When a man goes missing in a rural small town in Tennessee, family members and detectives band together to uncover scandalous secrets fueled by greed and lust.

When a devout single mother vanishes from her home, investigators fear she's been abducted by a group of teens hell-bent on a devilish plan; they race to find her before it's too late.

A family's life is turned upside down when a ghost from their past returns for revenge.

When newlyweds are gunned down outside a Texas church, small town cops realize they know the victims as they uncover a murder plot fueled by twisted family ties.

When the body parts of two missing teens are found in a backyard cornfield, Ohio detectives uncover dark family secrets; the community fears there may never be justice when the man convicted of the crime is released from prison.

When a construction worker unearths human remains in the backyard of an old farmhouse, it sets off a baffling 15-year missing person's case and leaves detectives searching for long-buried secrets and overdue justice.

A veteran police officer is gunned down in the line of duty; detectives make it their mission to bring his killer to justice; as they investigate a troubled Philadelphia suburb, they soon uncover a crime of the ultimate betrayal.

A popular therapist suffers a deadly attack in her Hollywood Hills home and police must trace a trail of deadly obsession and rage to find her killer.

A family recovering from a devastating loss is hit with another when a man finds his sister stabbed to death in her living room.

After a young mother disappears with a woman claiming to be a social worker, an investigation into her whereabouts ends in a gruesome discovery.

When a young mother is executed and her family critically injured, investigators piece together haunting clues and an earlier murder to capture deranged killers with a spiritual calling.

Mysterious deaths occur inside a traveling commune, starting an investigation that lasts more than a decade; two sisters -- former commune members -- reveal stories that involve lies, lust and greed.

Mysterious deaths occur inside a traveling commune, starting an investigation that lasts more than a decade; two sisters -- former commune members -- reveal stories that involve lies, lust and greed.

The murder of a young schoolteacher in Pennsylvania goes unsolved for years, but investigators discover a new tool that may finally help unlock the murderer's identity.

When a San Diego woman who is near death arrives at an emergency room, the FBI and local law enforcement are called in to try to solve a medical mystery and a horrific crime.

A successful businesswoman and mother of three is found shot in her office; the investigation into her death leaves a family divided.

A popular therapist suffers a deadly attack in her Hollywood Hills home and police must trace a trail of deadly obsession and rage to find her killer.

A veteran police officer is gunned down in the line of duty; detectives make it their mission to bring his killer to justice; as they investigate a troubled Philadelphia suburb, they soon uncover a crime of the ultimate betrayal.

When a household is targeted by gunfire twice in a short amount of time, investigators in rural Missouri sift through a community in search of a family's enemies, which leads them to a mastermind pulling strings.

A victim's burning body is discovered one night in February and investigators are put on the trail of an elusive criminal whose desire for financial gain leads to murder.

Two young friends who are prominent in the online deaf community pursue a shared dream in the northern California wilderness; when the pact turns sour and one of them goes missing, detectives must make sense of their perilous and deadly journey.

When a beloved wife and doting husband are involved in a bizarre car accident, only one of them survives; as inconsistencies pile up, detectives are left questioning if this really was a freak accident or a clever attempt to hide a murder.

When first responders find a self-made millionaire dead in his lakeside mansion, initial signs point to a natural cause of death; as investigators probe further, they uncover a toxicological bombshell that blows the case wide open.

Married for 33 years, a respected high school math teacher and his wife head to Las Vegas to celebrate her 50th birthday; when Evie Watson disappears, however, police from two states join forces and play a game of cat and mouse to catch her killer.

The shooting death of Brad McGarry, a gay coal miner in Bellaire, Ohio, has detectives suspecting a hate crime, but when a shocking secret comes to light, it reveals an unexpected motive for murder.

The execution of successful businesswoman and mother Makeva Jenkins sparks an intense investigation, but unveiling the masked gunman requires unmasking a litany of suspects in hopes of exposing a killer relationship.

Ed Bozarth lives life on the sea, but paradise turns deadly when the dashing adventurer is found dead on his boat in Key Largo; just below the surface, investigators discover a secret past, a life full of intrigue and enemies within.

When beloved ER nurse and mother Becky Bliefnick is found shot to death in her bathroom in Quincy, Ill., residents fear a killer has come to town; detectives discover this seemingly perfect Midwestern community has monsters of its own.

Popular TV anchor, Diane King, is a local celebrity, passionate advocate and a loving wife and mother; when she gets murdered in her driveway, however, the investigation reveals a twisted tale of sex, lies and stalking.

When a hospital employee dies mysteriously on a Center City sidewalk, detectives uncover surveillance footage of the murder that leads straight to the doorstep of a suspected serial killer who may be tied to a string of unsolved crimes.

After a well-known saddle maker passes away from an apparent heart attack, police find reason to question the natural death after rumors about drugs and embezzlement come to light.

A veteran police officer is gunned down in the line of duty; detectives make it their mission to bring his killer to justice; as they investigate a troubled Philadelphia suburb, they soon uncover a crime of the ultimate betrayal.

When a hospital employee dies mysteriously on a Center City sidewalk, detectives uncover surveillance footage of the murder that leads straight to the doorstep of a suspected serial killer who may be tied to a string of unsolved crimes.

Popular TV anchor, Diane King, is a local celebrity, passionate advocate and a loving wife and mother; when she gets murdered in her driveway, however, the investigation reveals a twisted tale of sex, lies and stalking.

Two young people are set up by their parents, leading quickly to love and marriage, but it is destroyed by a mother-in-law who orders the killing of a woman in broad daylight.

The start of the worldwide COVID-19 pandemic coincides with the disintegration of a once-loving marriage, leading to a cross-country chase to ensnare a vicious murderer.

Programming to be announced.

Programming to be announced.

A wife and mother survives an attack in her home and a shot to the head; authorities search for a motive.

A wife and mother survives an attack in her home and a shot to the head; authorities search for a motive.

Two decades after a Jacksonville, Fla., woman goes missing, her son solves the mystery that haunted his childhood.

A 21-year-old college senior is shot and killed in a public park just months before her graduation.

Randy Baker finds his calling as a counselor then winds up dead.

An aspiring military officer disappears suspiciously from her Virginia home, and two years later, her husband vanishes when he comes under suspicion.

Two unlikely lovers form a secret bond held together by faith, but the polygamous marriage ends when a manipulative and deceitful charlatan kills the woman he once loved, the young mother of his two sons.

A veteran police officer is gunned down in the line of duty; detectives make it their mission to bring his killer to justice; as they investigate a troubled Philadelphia suburb, they soon uncover a crime of the ultimate betrayal.

When a hospital employee dies mysteriously on a Center City sidewalk, detectives uncover surveillance footage of the murder that leads straight to the doorstep of a suspected serial killer who may be tied to a string of unsolved crimes.

A popular therapist suffers a deadly attack in her Hollywood Hills home and police must trace a trail of deadly obsession and rage to find her killer.

When a man is ambushed by a firestorm of bullets outside his home, investigators follow a twisted trail of suspects to a vindictive mastermind.

A woman's innocence is called into question after her husband dies from a mysterious malady and encourages detectives to take a deep dive into her past.

An investigation into the murder of a military hero tests the bonds of military camaraderie and unravels a myriad of secrets, lies and hidden identities.

The discovery of a body in a wildlife management area launches a murder investigation that forces a group of friends into the hot seat; when police think they find a surprising clue and possible hidden message the case breaks wide open.

When a body is discovered in the trunk of a burning car, police in Ohio sift through the ashes for clues; as the years slip by without an arrest, the killer may have evaded capture.

When a former Penn State professor mysteriously goes missing, police uncover clues to his untimely demise; the investigation leads to a grisly crime scene and two unlikely culprits, who would stop at nothing to get rid of him.

The murder of a popular hairdresser in Cincinnati leaves police stunned and desperate for answers; an unexpected break comes when a routine traffic stop in a neighboring county uncovers a vicious and deadly plot no one saw coming.

When a hospital employee dies mysteriously on a Center City sidewalk, detectives uncover surveillance footage of the murder that leads straight to the doorstep of a suspected serial killer who may be tied to a string of unsolved crimes.

A popular therapist suffers a deadly attack in her Hollywood Hills home and police must trace a trail of deadly obsession and rage to find her killer.

The murder of a popular hairdresser in Cincinnati leaves police stunned and desperate for answers; an unexpected break comes when a routine traffic stop in a neighboring county uncovers a vicious and deadly plot no one saw coming.

After an endearing World War II veteran and family man is laid to rest from apparent natural causes, a surprise witness surfaces with murder accusations, sparking a police investigation into a devious predator.

An investigation into the mysterious death of a loving mother leads authorities to uncover a diabolical plot hatched close to home.

When a hospital employee dies mysteriously on a Center City sidewalk, detectives uncover surveillance footage of the murder that leads straight to the doorstep of a suspected serial killer who may be tied to a string of unsolved crimes.

A troubled Las Vegas lawyer goes to sleep early while her psychologist husband takes their daughters out to dinner; when she doesn't wake up the next morning, her family is convinced there's more to this incident than investigators initially believe.

Intruders break into a family's home.

Intruders break into a family's home.

Hollywood actress Aasha Davis' sister, Lesley, goes missing after a fight with her husband never to be heard from again.

An aspiring doctor shoots her husband in front of their two sons on the side of a Nebraska interstate; a jury must decide whether this was an abused woman defending her life or a fed-up wife who wanted out of her marriage.

A family is in shock when their patriarch kills his brother-in-law and claims self-defense; when police uncover a bizarre story of missing cash and betrayal among this tight-knit immigrant family, the community doesn't know what or who to believe.

After a naval reservist is gunned down in her car outside an Atlanta mall, detectives pour over video footage, phone records and forensic evidence, only to discover that the DNA sample found at the crime scene creates an unforeseen twist in the case.

A young mother in the quiet Atlanta hamlet of Buford is found shot to death in what detectives deem to be a staged suicide; as investigators search for leads, they uncover an eerily similar death linked to someone with close ties to both victims.

The police discover a body wrapped in duct tape on church grounds in the posh neighborhood of Buckhead, Atlanta; detectives must untangle a web of romance, jealousy and deceit to uncover who killed a beloved father of two.

When an Atlanta-area horse trainer abruptly vanishes from his ranch, police search for the missing father-to-be, ultimately discovering a salacious secret where untamed passions may have led to the victim's untimely demise.

The family of a former soldier questions whether or not his death was a tragic coincidence when they learn of a suspicious detail from his wife's past.

When a missing man's body is found, his wife finds herself under a microscope; police want to solve the case before it goes cold.

When men who helped a "damsel in distress" turn up dead, authorities investigate.

Devoted to raising her daughter's child, a loving grandmother is found executed in her own home; police unfold an ongoing custody battle which leads to suspicions towards those nearest to her grandchild.

A young man ends up dead while out hunting; investigating whether this is a case of an accidental shooting, or if there is a more sinister explanation.

An Arizona socialite makes a gruesome discovery, which leads local law enforcement to ask questions about her troubled marriage; she claims she found a man dead, but police have reason to believe otherwise.

A young man is brutally murdered, and a woman is found covered in blood just hours later; she is adamant that she is innocent, and later a twist in the case shocks everyone involved.

While investigating the tragic murder of a devoted father in Virginia, detectives must work their way through several disturbing theories and contentious family dynamics to get to the heartbreaking truth.

Death hits close to home when a Mississippi father of four is brutally killed on his own front porch; soon, a mother and son turn against one another as detectives work to untangle a murky tale of he said she said to close in on a killer.

The identity of a Jane Doe found dead in a New Jersey park holds the key to unraveling a tangled web of fraud and murder that spanned years and pulled in multiple victims along the way.

When the body of a beloved father is discovered in a South Carolina home, detectives uncover a toxic love affair that had deadly consequences.

Letti Strait was found guilty of her ex-husband's murder 12 years after the crime.

An attorney is murdered, and a trail of obsession and jealousy emerges.

A popular therapist suffers a deadly attack in her Hollywood Hills home and police must trace a trail of deadly obsession and rage to find her killer.

The murder of a popular hairdresser in Cincinnati leaves police stunned and desperate for answers; an unexpected break comes when a routine traffic stop in a neighboring county uncovers a vicious and deadly plot no one saw coming.

After shedding hundreds of pounds, a popular kindergarten teacher goes missing; investigators find a link between her weight loss and her disappearance.

A foreign exchange student and soccer player's participation in a dangerous game leads to deadly consequences.

When detectives track down the killer of a Las Vegas cocktail waitress and mother, it becomes clear that the investigation has just begun.

A former Marine is fatally shot by his neighbor in broad daylight; the shooter claims self-defense, but eyewitnesses state he was the aggressor; when investigators uncover a feud between the two, it calls both of their motivations into question.

Hector Campos fatally shoots neighbor Ana Weed after an argument on their property line; while Hector takes to national TV to plead self-defense, Ana's family reveals to investigators a tale of betrayal, secret spouses and a fateful escape to Mexico.

Tragedy strikes rural Iowa as two women are found murdered in their homes; when a local bank is robbed the same day, investigators connect the crimes to an unfolding crime spree and race to find the killer siblings before they can strike again.

Teen brothers rebel against their strict upbringing and become skinheads, and when their mother, father and younger brother are discovered murdered in their home, police begin a manhunt that leads them across three states.

A home invasion starts a massive manhunt through the remote, snowy wilderness of Idaho for two bank-robbing brothers who once helped catch a notorious Soviet spy.

The murder of a popular hairdresser in Cincinnati leaves police stunned and desperate for answers; an unexpected break comes when a routine traffic stop in a neighboring county uncovers a vicious and deadly plot no one saw coming.

A popular therapist suffers a deadly attack in her Hollywood Hills home and police must trace a trail of deadly obsession and rage to find her killer.

When a pregnant army wife and mother are found shot to death in her home, it is ruled a suicide, but dogged police work unlocks a devious plot and secrets buried in ashes thousands of miles away.

When a beloved college student dies under suspicious circumstances, controversy rages for years between investigators, medical examiners and her family, until a final shocking conclusion is reached.

A couple's pickup is found submerged in a lake, and the wife's death appears to be the result of a horrible accident until investigators learn that not everything is as it seems in this pair's union.

When the half-dressed, partially frozen body of a Navy veteran is found lying in a ditch, rumors and lies will challenge detectives' efforts to lay bare the truth behind the chilling death.

A shocking carjacking may have ties to international espionage, or the murderer could turn out to be someone much closer to home.

A chance for love brings an Oklahoma woman to rural Texas, but her quick disappearance has investigators following a paper trail that will expose the treachery of greed.

The twisted story of a heinous murder plot in Kansas; rife with betrayal and deceit; in an exclusive interview with someone personally involved in the crime, hear a riveting account of the deadly scheme.

After a John Doe's body is found at a Virginia park, investigators track a killer who has a long history of wrongdoing.

The mysterious disappearance of a beloved nurse leads Arkansas investigators down a twisted path of familial betrayal; as detectives hunt for the missing woman, evidence upturned along the way points toward deadly foul play.

The body of an unidentified female is found within a forested nature center in Bloomington, Ill; investigators must scramble to piece together her fractured life and try to determine just how familiar her killer may be.

Former police officer Laurie Bembenek is found guilty of murdering her new husband's ex-wife; years later, new evidence comes to light that changes everything.

When Idaho family members return home from a church gathering, they find dinner burned to a crisp, a missing fiancée and signs that a brutal crime has been committed; all leads point close to home as detectives begin their investigation.

A veteran police officer gets attacked in the line of duty; detectives make it their mission to bring his killer to justice; as they investigate a troubled Philadelphia suburb, they soon uncover a crime of the ultimate betrayal.

When a hospital employee dies mysteriously on a Center City sidewalk, detectives uncover surveillance footage of the murder that leads straight to the doorstep of a suspected serial killer who may be tied to a string of unsolved crimes.

As a murder victim's sisters dedicate themselves to finding the killer, an unexpected source turns the case upside down.

As a murder victim's sisters dedicate themselves to finding the killer, an unexpected source turns the case upside down.

A model with a checkered past goes under cover to reveal the truth about a cold case involving a romantic getaway on a boat that ended with a woman being lost at sea.

Seventeen-year-old Anthony Templet calls 911, confessing to shooting his father in self-defense; with no signs of a physical attack, authorities suspect murder; as the investigation unfolds, the dark underbelly of the family is exposed.

A mother of three shoots and kills her neighbor in a home invasion, leaving a small community grasping for answers; while the neighbor's parents question this apparent act of self-defense, police find a journal that leads to the truth.

When a hospital employee dies mysteriously on a Center City sidewalk, detectives uncover surveillance footage of the murder that leads straight to the doorstep of a suspected serial killer who may be tied to a string of unsolved crimes.

A veteran police officer gets attacked in the line of duty; detectives make it their mission to bring his killer to justice; as they investigate a troubled Philadelphia suburb, they soon uncover a crime of the ultimate betrayal.

The sudden disappearance of Manjit Panghali sparks a massive search for the pregnant mother; investigators uncover a tight-knit immigrant community in shock, a family in mourning and a killer relationship exposed.

Newly single Michele Davis is killed when her car careens off an Iowa highway; what looks like an accident is anything but, however, as investigators peel back the layers of her life and discover a motive for murder.

Firefighter Ben Amato is callously murdered, but the case goes cold; a jailhouse snitch, critical clue and seemingly unrelated homicide expose a sinister plot as investigators stay on the trail of a heartless killer.

Young mother Elizabeth Ferrell goes missing in Texas as a body is found in Louisiana; as detectives connect the dots between the two cases, secrets rise to the surface and reveal a shocking tale of love, betrayal and revenge.

A woman is shot to death while driving her sons home from a Thanksgiving celebration; the hunt for her killer leads to an unlikely suspect, making investigators realize her murder is not as random as it seems.

When a young woman home from college ends up murdered in her home and the tools of her demise turn out to be the rolling pin and carving knife the family planned to use for Thanksgiving dinner, investigators struggle to solve this holiday horror.

When Dr. Joe Sonnier is murdered, the investigation reveals simmering jealousies and a love triangle; Andrea Canning recalls a doctor who dedicated his life to helping others.

After Lisa Zeigert is killed, her family keeps the case in the public eye for decades; Andrea Canning reflects on the harrowing mystery and discusses the inspiration she's drawn from Lisa's loved ones.

After trumpet player Scott Sessions fails to show up for a scheduled gig, his family learns his body was abandoned in the remote Colorado Rockies; as the investigation narrows in on two suspects, a second murder catches police by surprise.

Andrea Canning reflects on a story that reminded her how people can be vulernable and how quickly life can change; she speaks with Judge Esther Salas about the knock at her door that robbed her of the most important thing in her life.

A chance encounter on the Pacific Coast Highway with a woman he first spoke to in a jail cell leads Keith Morrison to re-examine the mysterious death of Las Vegas casino magnate Ted Binion.

A pastor's secrets come to light, triggering a murder investigation; Josh Mankiewicz looks back at a case that shattered a congregation and exposed the cost of their trust.

When a homemaker dies in her hot tub, detectives in a normally quiet Idaho town first believe it to be a horrible accident. But the investigation leads back to the unsolved murder of her husband, reminding police that lightning never strikes twice.

A former Gang Unit investigator is found dead in his crashed van on the freeway, and all signs point to a DUI. But when four bullets are found in his body, a decade-long homicide investigation must consider gang retribution or lover's revenge.

The sister of a man who died after robbing a bank when a bomb that was placed around his neck detonated talks about the case.

The sister of a man who died after robbing a bank when a bomb that was placed around his neck detonated talks about the case.

As detectives struggle to find leads in the murder of a college student, the perpetrator strikes again.

An Army veteran kills the head of his girlfriend's household after confronting him about sexually assaulting the young woman; after hearing a recording of the fight, investigators must decide if this was vigilante justice or self-defense.

After suffering years of abuse, a Missouri woman claims she had no choice but to kill her husband during a gun struggle; when the autopsy is performed on the body her mother helped her bury, however, her self-defense story comes into question.

An Ozarks country wedding brings hope and second chances to a Christian couple; but friends and family are mystified when they vanish in the dead of night from a farmhouse that had been given to them by the groom's mother.

Happy newlyweds renovate a house for their future family when tragedy strikes; it isn't until a dark and twisted secret is revealed that justice is served for a devastating double homicide.

Just five days before her elaborate Long Island wedding, a beautiful and brilliant Yale student goes missing; a massive search effort is launched to find her before her wedding day.

A 14-year-old girl discovers her wealthy father brutally executed in their home late at night; the investigation proves that not everything is as it seems, uncovering love affairs, possible connections to the mob and a twisted journey to justice.

As investigators dig deeper into a man's disappearance, they realize his recent online presence may be a charade.

When the last real cowboy is found dead at home, detectives dig in and are hard-pressed to find anyone who'd want to see this loving father murdered; a closer look at his nearest confidants unravels a heinous plot twisted by love and money.

After a beloved town librarian is gunned down, investigators discover that this murder-for-hire gives a whole new meaning to a broken heart.

When a Texarkana square dancer is gunned down on the steps of her home, detectives follow a trail of surveillance footage leading straight to the killer.

Andrea Canning recalls a case in which investigators set up an elaborate sting operation to stop a murder-for-hire plot.

When a woman is found dead in her SUV, the investigation into her murder reveals a tangled web of sex and lies; Dennis Murphy looks back on his interview with the lead suspect.

A beloved couple is found murdered among a lifetime of valuable collectibles in their home; investigators want to know if there is a connection between the memorabilia and the murders.

The murder of a businessman exposes a tangled web extending from the Pacific Northwest to the North Dakota oil patch; investigators race to piece together seemingly disconnected clues to catch a monster before he strucks again.

It is a case Josh Mankiewicz cannot forget because, while a student-athlete did everything right to keep herself safe, others did not; after she was found murdered, investigators learned she reached out for help multiple times before her death.

Chris Smith's family receives an email stating that he is leaving California to surf the world; months later, they wonder if he really left; Keith Morrison offers new insights into the case.

Jacquelyn Smith is stabbed to death in Baltimore, in what appears to be a random act of violence; as detectives dig deeper, they uncover a diabolical plan, vicious lies and a killer relationship.

Ed Bozarth lives life on the sea, but paradise turns deadly when the dashing adventurer is found dead on his boat in Key Largo; just below the surface, investigators discover a secret past, a life full of intrigue and enemies within.

A Connecticut bank executive is targeted by criminals who force him to rob his own bank.

A Connecticut bank executive is targeted by criminals who force him to rob his own bank.

Robert Davis, who was convicted of murdering a woman and her son, claims his confession was coerced and tries to prove he is innocent.

A cosplay model makes a frantic 911 call and claims that she woke up to find her boyfriend stabbed to death; surveillance footage from around the home leads detectives to the killer,it raises the question of whether it was self-defense or murder.

Wealthy dentist Kirk Turner tells police he killed his wife, Jennifer, with a pocket knife after she impaled him with a spear.

Spree killer Joanne Dennehy's daughter Shianne shares how she has struggled to come to terms with the realities of being the child of Britain's most dangerous woman.

Peter Tobin raped and murdered Angelika Kluk in 2006, and with the help of his ex-wife, Cathy Wilson, a groundbreaking investigation unearthed more victims and revealed him to be a serial killer.

The ex-girlfriend of the self-proclaimed Crossbow Cannibal reveals the mental and physical abuse she endured for years at the hands of one of the U.K.'s most heinous serial killers.

A veteran police officer gets attacked in the line of duty; detectives make it their mission to bring his killer to justice; as they investigate a troubled Philadelphia suburb, they soon uncover a crime of the ultimate betrayal.

When a hospital employee dies mysteriously on a Center City sidewalk, detectives uncover surveillance footage of the murder that leads straight to the doorstep of a suspected serial killer who may be tied to a string of unsolved crimes.

Allegations of real estate fraud and rumors of murder have Sarasota Police on the trail of a criminal whose final plan to evade trouble lands her in the very hands she tried to avoid.

When a Kapowsin, Wash., mother is discovered murdered on her couch in a compromised position, investigators must piece together all the evidence to determine if this was a random crime of opportunity or a facade to humiliate the victim.

Police race for answers after a school teacher is found murdered in her San Antonio, Texas, apartment; while lies and betrayals come to light, the case goes cold, but one detective refuses to give up.

When two sisters' husbands turn up dead within weeks of each other, Florida detectives investigate whether the cases are linked.

After a well-known business owner is found dead in his Lake Orion apartment, investigators are left untangling a web of lies to uncover a deadly duo looking to get rich quick.