Erin reports a brutal attack on her friend turned lover, but a secret relationship and allegations of abuse add a surprising twist to the investigation.

Authorities become suspicious when a pastor loses a second wife in an accident.

Authorities become suspicious when a pastor loses a second wife in an accident.

An advocate for missing and murdered Indigenous women searches for answers in the disappearance of her niece and exposes cracks in law enforcement.

A Philadelphia murder reveals decades of misconduct in the city's criminal justice system and raises questions aout whether police caught the right person; key insiders in the case speak out for the first time on national television.

In Kansas, a prison volunteer helps a man escape custody; investigators scramble to track the pair down.

The investigation into the mysterious disappearance of a Canadian man sparks an international manhunt for an elusive killer with multiple false identities.

A 49-year-old man was shot and killed while walking his dog in front of his Texas home. Josh Mankiewicz looks back at a case with an unusual motive.

An idyllic North Carolina town makes the international press when a double murder involves a victim with an infamous past.

When a young Texas mother goes missing, a tangle of dark secrets and a trail of deceit threatens to derail the investigation.

When a 21-year-old goes missing during the height of the pandemic, LAPD detectives unravel a mystery hidden in deleted security video to solve a murder.

When a beloved Michigan mom disappears, investigators discover she was the target of a dark satanic ritual.

When an ROTC student vanishes, a determined female detective must confront the prejudices of the time and crack the campus code of silence to bring a killer to justice.

When a successful Phoenix realtor disappears in the desert, investigators discover that a killer is targeting real estate agents and must catch him before he strikes again.

When a twenty-year-old artist is discovered dead in a suitcase across state lines, detectives must uncover the dark truth behind an obsessive lover's deadly actions.

An armored car robbery and Santa Claus bandit captivate headlines, and the crime goes unsolved for years until a local man is found buried in the snow.

When the wife of an Army medic is murdered in her Hawaii home, the investigation reveals a sordid tale of secrets, lies and a twisted romance that captured headlines across the country.

The disappearance of a well-respected businessman leads to an investigation that exposes a secret romance fueled by lust and greed.

An armored car robbery and Santa Claus bandit captivate headlines, and the crime goes unsolved for years until a local man is found buried in the snow.

An Amish community is turned upside down when a young wife and mother is found murdered inside her home, leading police to look deeper within the community, and exposing a secret romance that triggered a deadly conspiracy.

A beloved Oklahoma father is discovered murdered inside his home and the search for his killer uncovers a forbidden romance and a deadly double-cross.

Michael Jackson and Anna Nicole Smith were two icons who shared the tragic bond of being hooked on prescription drugs and fatally overdosing.

The mystery surrounding the deaths of three women deep in the Sonoran desert takes 17 years to untangle.

The mystery surrounding the deaths of three women deep in the Sonoran desert takes 17 years to untangle.

Keith Morrison reports on an undercover operation in Palm Beach, Florida to save a wife and mother.

A couple goes on a scuba-diving vacation in the British Virgin Islands; one of them surfaces but the other does not.

In 2005, a district attorney in Pennsylvania went missing, seven years after he investigated sex-abuse allegations made against Jerry Sandusky.

The untold true story of NFL superstar Aaron Hernandez from the viewpoint of those who knew him best strips away the layers to answer the many questions left behind after Hernandez's tragic death.

The untold true story of NFL superstar Aaron Hernandez from the viewpoint of those who knew him best strips away the layers to answer the many questions left behind after Hernandez's tragic death.

A young couple becomes the target of a nationwide manhunt after police connect the deadly lovers to two grisly murders in different states.

A horrific killing spree leads Pennsylvania investigators on the hunt for two young lovers willing to do whatever it takes to evade the law.

The sudden disappearance of a wealthy couple rattles their small town and launches an investigation that exposes a web of deception, greed and a blood-soaked betrayal.

When a wealthy couple falls victim to a deadly home invasion, the search for the killers exposes both a twisted relationship and a family betrayal no one saw coming.

When a beloved grandmother falls victim to a brutal crime, the search for her killers reveals a torrid romance between two young lovers willing to do anything to get what they desire.

The unexplained disappearances of a young mother and her two sons in 1980 lead investigators on a three-decade quest for justice, exposing multiple murders and a homicidal love affair that left untold suffering and carnage in its wake.

A loving couple are found shot to death in their home, forcing police to pursue a pair of desperate lovers on a cross-country manhunt.

When a young woman is found tortured and killed after a camping trip with friends, police must unravel two couples' conflicting stories of depravity to bring her killers to justice.

The disappearance of a young socialite in Charleston prompts a team of private investigators to unearth a betrayal at the hands of her two best friends, one of whom is a con artist with a secret.

When a single mother is found murdered in her home, the investigation exposes a twisted love triangle and a murder-for-hire scheme devised to kill the competition.

The ritzy ski resort town of Aspen, Colo., is turned upside down when a celebrated socialite is found murdered in her home, leading investigators to uncover a bitter feud between friends.

The brutal murder of a young Army specialist leads investigators to explore a complicated love affair fueled by obsession and jealousy.

When a beloved schoolteacher is violently assaulted outside her home, police discover a toxic romance that destroyed a family's bond.

A popular chiropractor is healthy one day then dies a painful death the next, so police begin the search for a murderer.

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 complicated Texas love triangle ends in murder, a pink gun leads to an arrest, until new evidence prompts investigators to rethink the case.

When a complicated Texas love triangle ends in murder, a pink gun leads to an arrest, until new evidence prompts investigators to rethink the case.

When a luxury car dealer is found dead, detectives suspect one of his lovers, but lack of evidence stalls the case for a year, until one clue breaks it wide open.

After U.S. Naval Academy graduate Cathy Thomas and her girlfriend, Becky Dowski, are murdered in a lovers' lane area on the Colonial Parkway in Virginia, authorities are left to wonder if it is a hate crime or the birth of something more ominous.

The slayings of David Knobling and Robin Edwards in 1987, less than a year after Cathy Thomas' and Becky Dowski's Colonial Parkway murders, leave law enforcement rattled.

After 27 years in prison, Carolyn Warmus speaks for the first time since her release, detailing her affair with co-worker Paul Solomon, whose wife, Betty Jeanne, was found murdered.

Carolyn Warmus is granted permission to conduct new DNA tests that she believes will prove her innocence in the murder of her lover's wife 27 years after she was imprisoned for the woman's death.

The disappearance of a well-respected Georgia man triggers an investigation into the dangers of online dating and reveals a disturbing plot borne of lust and greed.

When a Navy man falls victim to a deadly home invasion, the search for his killers exposes both a sordid romance and a deadly conspiracy within his own ranks.

The horrific attack of a beloved spiritual leader takes an investigation into a dark underworld of black magic and unbridled rage.

When police are called to a seemingly routine domestic disturbance at a mansion in Louisville, a bizarre tale unravels after one man reveals a body is buried in the basement.

As police in Tallahassee, Fla. work to solve the case of a young father gunned down in his apartment, they find evidence of a deadly sexual encounter and uncover a vengeful plot, ultimately proving that blood is thicker than water.

The murder of a beloved schoolteacher takes detectives from Kentucky to Florida, where an unexpected romance comes to light; as the investigation unfolds, relationships unravel, and a long con born of greed is unveiled.

A small town in Washington is rocked after a local man is found shot in his home; police wonder if his complicated love life played a role until a string of robberies exposes a dangerous couple with a more sinister motive.

After a young man is found shot to death on the banks of a Georgia river, investigators trace the murder back to individuals who share his Gothic lifestyle and uncover a romantic rivalry driven by manipulation.

A house fire in Louisville, Ky., sparks a murder investigation when detectives find two local men brutally stabbed to death; the search for the killer reveals a toxic romance between two lovers willing to risk it all to get what they desire.

An elderly veteran is nowhere to be found after his house suddenly bursts into flames in Tucson, Ariz., causing authorities to kickstart a nationwide manhunt to catch a desperate couple on the run not once, but twice.

After the remains of an elderly woman are discovered in Florida, investigators track down suspects with a complex family dynamic. The woman at the center of it tells her story for the first time, revealing details of the harrowing crime.

When a young man is found shot to death in rural Indiana, the ensuing investigation delves into the dangers of online dating; authorities ultimately uncover a stunning betrayal fueled by a twisted romance.

A 61-year-old farmhand is found murdered in his home on the outskirts of the Ozarks; a strange text message points to a suspect, but the investigation quickly diverges after a duo on the run is exposed, resulting in a fatal shootout in Mississippi.

A father and daughter are reported missing after evidence of a bloody attack is found in their home; as the investigation unfolds, police interview a trio of suspects and their conflicting stories reveal a twisted plot driven by infatuation.

An armored car robbery and Santa Claus bandit captivate headlines, and the crime goes unsolved for years until a local man is found buried in the snow.

A loving, single mother of two is the victim of a bizarre murder, leading detectives to investigate a number of suspects.

After a young father is found dead in his home in Jonesboro, Ark., the authorities search for the killer.

Authorities work to establish why a loving mother was brutally stabbed to death in her home.

After a successful young doctor collapses, a blood test reveals cyanide poisoning, resulting in a criminal investigation.

In 1999, a family of five vanishes from their home in rural Wisconsin; when remains are discovered in their burned-out car, the community is on edge with rumors of occult killers, while the investigation leads to a shocking and sinister conclusion.

After the bodies of an Ohio mother and her two daughters are found in the Tampa Bay waters in June of 1989, detectives launch a multiyear, painstaking investigation that finally leads them to an elusive and unexpected killer.

A yearslong investigation into the killer of Johnia Berry, who is stabbed more than 22 times in her Knoxville, Tenn., bedroom while her male roommate escapes.

Questions are raised when a teenager awakens to discover her father, a popular high school drama teacher, stabbed to death in his bedroom.

A beautiful blonde seduces various lovers in a small town, causing havoc; it isn't until an unlikely witness steps forward and another tragic death occurs that the village becomes aware there is a cunning and charming killer in their midst.

When a Jeopardy-winning colleague romances Linda Kinkade, it seems she's won the jackpot until she dies mysteriously; it takes a wily cold-case cop to uncover an overlooked clue to put a killer behind bars.

A professor is found dead inside his Jeep in what appears to be a car accident in Tennessee; after evidence at the scene points to foul play, the ensuing investigation exposes secrets of infidelity and a crime motivated by lust and money.

An immigrant from Pakistan is found brutally murdered inside his Washington, D.C., pizzeria; given the lack of forced entry, investigators believe he knew his killer and a plot involving marriage fraud surfaces, leading to a deadly crime of passion.

Texas police investigating the stabbing death of a mother uncover a bizarre scene: poisoned pudding, cell phones submerged in water, and a bathtub rigged for electrocution; in the end, a disturbing plan is revealed, driven by a young love gone wrong.

When RV-lifestyle couple James and Michelle Butler go missing while camping along the southern coast of Texas, the discovery of human remains leads authorities to embark on an international manhunt to bring the fugitives to justice.

After a father is reported missing, a body is discovered in a remote Texan swamp; investigators are faced with several possible suspects as complex family dynamics come into play that expose a secret betrayal.

Just one month before her wedding, a nurse is shot to death in a reported roadside robbery in rural Arkansas; as investigators work to find the suspects, odd details of the attack are uncovered and a confession paints an entirely different story.

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, a 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 bag full of evidence recovered from an iced-over river helps to reveal the murderer of a businesswoman in her own shop.

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

After a fire dispatcher is found dead in a raging house fire, police discover that it's not the first time his wife has become a widow, and investigators get a confession in an unexpected location.

After a decade of rumors, an elderly woman in rural Louisiana falls under suspicion when a man is found dead in her apartment, and local authorities discover an extensive history of tragedies, all surrounding the friendly church lady.

A dancer is murdered in her Virginia home.

A dancer is murdered in her Virginia home.

A chance encounter by custom agents leads to a break in the case of a mother who disappeared days before she was supposed to move to a different city with her young son; a witness speaks out 20 years after the incident.

A family of four is found dead inside a partially burned Indiana home; when investigators discover that two of the victims died from gunshot wounds, the race is on to determine whether the killer was a stranger or someone closer to home.

An elderly couple and their daughter are found beaten and stabbed in their home in central Texas; from potential family members to disgruntled employees, investigators consider many suspects and leads before finding answers in an unlikely place.

In an upscale high-rise in Chicago, a successful businesswoman is murdered as her boyfriend sleeps beside her; investigators point a finger at the boyfriend, but an exhaustive investigation uncovers the surprising architect of her murder.

A mother is shot to death while her young daughters lay asleep in the same room; baffled investigators wonder if an open door invited an intruder in, or if the killer is someone else she trusted who has been in the house all along.

Single mom Margie Danielsen falls in love with a handsome chef, but when an episode of "America's Most Wanted" airs, she realizes she may be far too close to a fugitive and must risk her life to bring him to justice.

When a dance instructor waltzes into widower Alan Helmick's life, he is elated until someone inspired by a movie puts an end to his dreams; It will take a savvy team of investigators to bring a killer to justice.

Kay Mortensen takes pride in preparing for every possible threat, then he is found murdered, and two of his loved ones wind up behind bars.

Jodi Arias' murder trial captivates the nation, exposing her secrets; however, the trial fails to solve the mystery of who this woman is behind her veil of lies.

A graduation party ends with a man's death and leaves two teenagers facing a long fight for justice.

The fire breaks out before dawn; after the smoke clears, a mother of two young children is found dead; it's the tragic end to a life that held so much promise, but for investigators, it is just the beginning.

Kevin and Morgan Mengel are happy at first, but when the marriage goes bad, he goes missing; police wonder if he simply left, but a family's relentless pursuit leads to a stunning confrontation and, eventually, the truth.

A family mourns the loss of a young mother in a house fire; authorities rule it an accident; years later, there is another accident and second loved one gone; investigating if this just a string of bad luck or the work of a calculating killer.

The investigation into the mysterious disappearance of a Canadian man sparks an international manhunt for an elusive killer with multiple false identities.

A week before a wealthy banker's divorce was set to reach a settlement, an ex-con says he was hired to murder someone in the family.

He was a wealthy doctor with a perfect life and the perfect wife; then, he found her dead on Valentine's Day; she was beloved but did have enemies; investigators followed a bloody trail of evidence, leading to a big courtroom twist.

A week before a wealthy banker's divorce was set to reach a settlement, an ex-con says he was hired to murder someone in the family.

After a small-town storeowner is murdered, detectives work to unravel his ex-wife's web of lies and capture a killer.

A voice from beyond the grave helps investigators solve a crime after a Sunday School teacher loses two husbands in a row under suspicious circumstances.

A double homicide in upstate New York leads detectives on a cross-country investigation to piece together a case with a surprising suspect at the center.

A double homicide in upstate New York leads detectives on a cross-country investigation to piece together a case with a surprising suspect at the center.

A doctor ingests a lethal chemical, causing friends to wonder if it was an attempt at suicide or if he was poisoned -- until a love triangle is uncovered.

A motocross champion and a model tie the knot in Las Vegas, never knowing their wedding vows will trigger a mysterious murder plot and a decades-long investigation.

A dental student rejects her boyfriend's marriage proposal, then dies under mysterious circumstances; when another victim dies under similar circumstances 14 years later, investigators must determine if the two cases are fatally intertwined.

After a man is found murdered, detectives search for a motive in the seemingly senseless slaying; after considering whether it was a case of mistaken identity or a robbery, investigators ask if secret desires caused a killer to strike in God's name.

When police investigate the murder of a Private Investigator the trail leads them to a wealthy woman who had affairs with both a father and his son.

A young mother's passionate affair with an old boyfriend ignites suspicion when someone close to both of them is murdered.

When a young military wife goes missing from a Marine base, investigators suspect a forbidden love affair and a secret pregnancy may have driven someone to murder.

After filming wraps on an indie horror movie, the cast members learn their lead actress is not who she says she is and has been charged with killing her uncle; it's a story Keith Morrison can't forget, one where family drama takes center stage.

A hunting safari in Zambia ends in tragedy when a shot rings out from the cabin of a dentist and his wife; Andrea Canning revisits one of the most unique cases she's covered, one that sent her thousands of miles from home in search of answers.

A couple is murdered shortly after their wedding and police suspect a family feud is the cause; Josh Mankiewicz looks back at what started the dispute that left him floored.

While North Carolina detectives hunt for answers in the murder of 28-year-old James Chambers, his mother searched for his remains; Andrea Canning reflects on the family's unrelenting quest to find justice for James.

A wife and mother is taken into an unmarked car by a blond woman on a Monday morning, but police are unable to find any record of her arrest; for Josh Mankiewicz, this case reset the bar for brazen and he revisits the reasons why.

Nathan and Denise Leuthold build their family on faith, but suddenly one of them dies and the other is under suspicion; it's a story that stays with Andrea Canning, both because of what happened and when it happened: Valentine's Day.

A young Tennessee woman vanishes and misses her family's Thanksgiving dinner; determined to track her down, her family takes matters into their own hands.

A Valentine's Day rendezvous in an Atlanta-area park turns deadly, and investigators race to find the killer of a beloved husband and cub scout leader; when detectives reveal the mastermind behind the brutal slaying, the community is left speechless.

Peachtree City socialites Ruby Joyner and Halima Jones are found murdered in a van, igniting a frenzy within their wealthy community; when police dig into the women's personal lives, they uncover a secret that blows the case open.

The discovery of a 19-year-old's car abandoned on a bridge in New Jersey turns into a missing person case that evolves into a homicide investigation; police discover a plot involving money, close friends and a betrayal.

The discovery of a 19-year-old's car abandoned on a bridge in New Jersey turns into a missing person case that evolves into a months long homicide investigation; police discover a plot involving money, close friends and a fatal betrayal.

A brilliant woman who rose from poverty and became a successful criminal defense attorney is murdered; investigators look into her clients and follow a bizarre string of clues.

A newlywed bride disappears during a freezing Canadian winter leaving police with few clues; the search for her uncovers an unconventional marriage leading to multiple suspects.

Two young newlyweds move in with the groom's mom to build for their future, but when they mysteriously disappear, investigators embark on a cross-country manhunt for a cold-blooded con man and killer.

Eight days before the wedding of their dreams, a couple's plans are derailed by a brutal murder; a detailed investigation unravels a murder-for-hire plot that leads them to suspect a member of the wedding party.

Investigators have no shortage of suspects when a Wall Street millionaire is murdered in the middle of a bitter divorce; they must untangle a series of illicit affairs and dangerous liaisons to uncover the surprising identity of the killer.

The lifelong friendship of two men is threatened when they both love the same woman, leading investigators to suspect murder when one of them disappears.

A handsome new dance partner awakens unfamiliar emotions in a conservative young wife putting two marriages in turmoil; when she disappears shortly afterwards, investigators must unravel a confusing trail of betrayal and heartbreak to crack the case.

Hunters stumble across a young woman's decaying body wrapped in fabric, launching an investigation across several counties in Florida; horrific rumors quickly swirl and a night of partying that morphed into an act of desperation is revealed.

After evidence of a violent attack is discovered in a West Virginia home, the body of a beloved photojournalist is found in the woods; the search for the killer reveals a sordid affair and a murder-for-hire plot with a shocking co-conspirator.

In the Los Angeles suburbs, a family is brutally attacked in its residence, leaving four dead and a mother clinging to life; as police search for answers, suspicion grows closer to home and unveils a macabre obsession fueled by young love.

After two best friends are reported missing, Texas and Minnesota police team up to bring a suspected serial killer to justice; an accomplice shares her side of the story from behind bars, revealing chilling details of the crime.

A North Dakota community is rocked after a beloved mother is found stabbed to death in her home.As police look to those closest to her for answers, an informant comes forward and exposes a dangerous couple's vengeful plot.

When authorities respond to a car fire in rural Michigan, they find a charred body discarded nearby; as the investigation unfolds, the victim's phone records point to a vicious plot stemming from a dangerous infatuation.

Just months before his retirement, a missing trucker's body is found in a remote creek; as detectives run out of leads, a seemingly minute detail breathes new life into the investigation revealing two lovers with a nefarious plot.

When an esteemed California pastor is found executed in an almond orchard, investigators turn to his complex love life for answers; allegations of blackmail are exposed, and a vindictive conspiracy is ultimately brought to light.

When a crimespree leaves five dead, South Carolina authorities kickstart a multi-state investigation to capture a desperate couple on the run; the case grows more complicated whenpolice are faced with conflicting accounts of the murders.

After a young mother is murdered in broad daylight, Texas authorities are on a hunt for a masked gunman; the ensuing investigation uncovers a bitter custody battle and a vicious plot born of obsession.

A welfare check confirms the worst when a woman is found brutally murdered on her couch; the ensuing investigation leads authorities from Oklahoma to Arkansas where conflicting stories of a crime motivated by greed and jealousy are uncovered.

When a missing man's bullet-riddled body is found off the side of a road, police must dig into his complicated past to uncover the truth; the case hits a standstill until information about the victim's car comes to light and reveals a toxic romance.

When a shocking crime is committed in broad daylight that leaves a young man dead on the street, the investigation uncovers a personal vendetta; in exclusive prison interviews, the killer couple each share their version of events.

Exploring the past of the con man "Dirty" John Meehan and his trail of manipulation that led to a dangerous end with Debra Newell and her family; exclusive interviews with former girlfriends and law enforcement who speak out for the first time.

Twenty-seven-year-old Egypt Covington is found murdered in her home; investigators in Michigan quickly identify a person of interest but years pass without an arrest.

Twenty-seven-year-old Egypt Covington is found murdered in her home; investigators in Michigan quickly identify a person of interest but years pass without an arrest.

A matriarch's death leads to a prominent family from Texas being torn apart by decades of betrayal, greed and mistrust.

Campus cops make a terrible discovery in a dorm room after a boyfriend's weekend visit goes horribly wrong.

A girl's recovery from a gunshot wound inspires the community to get her justice.

Social climbers get remarried and blend their families; then, a mysterious disappearance leads investigators into a top-secret world of espionage, and a killer escapes justice for nearly a decade.

College sweethearts celebrate their love with a happily-ever-after wedding; within months, their fairytale marriage ends with bloodshed igniting a hunt for a charming and manipulative killer who may just get away with it.

A teenage Romeo and Juliet defy family differences to marry and have a baby boy, but their joy is shattered when violence rips the family apart; decades later, the cold case gets a lead that reveals deep family secrets and a web of lies.

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.

A housewife turned porn star teams up with her co-star to commit murder after a wild sex party.

An evangelical housewife and a former child star devise a scandalous murder plot.

Two young lovers embark on a psychedelic road trip inspired by their favorite movie.

A prison guard falls in love with an inmate and finds herself willing to do anything to make him happy.

The story of two teenage lovers who, like Romeo and Juliet, made plans to commit suicide together; first, though, they had another life to take.

The dark side of two former honor students.

Police wonder if there's more than meets the eye between a young newlywed and her openly gay co-worker.

An affair between a wealthy doctor's wife and a younger bad boy ends in violence.

A man stumbles on a body in a neighbor's garage and Detroit police hope the victim's tattoo will help identify the victim and point them toward the killer.

He is the serial killer you've never heard of ... until now. In 1973, 22-year-old Doug Gretzler embarked on a cross-country road trip that spiraled into a brutal killing spree. In just three weeks, he and his accomplice, 28-year-old Willie Steelman, murdered 17 people. Their motive? A mystery that has left family members, law enforcement and experts baffled for decades. Drawing from first person interviews and over 500 hours of recorded conversations with Gretzler himself, hear his darkest confessions and the chilling psychology behind his crimes for the very first time.

A man stumbles on a body in a neighbor's garage and Detroit police hope the victim's tattoo will help identify the victim and point them toward the killer.

After a young woman vanishes from her neighborhood, North Carolina detectives are snared in a tangled web of deceit as they uncover a vicious love triangle; it's a race against time to find a killer and the evidence they need to solve a dark mystery.

When a long held secret in Florida threatens to expose a deadly truth, investigators work to unravel a baffling mystery; the dark life of a beloved mother may have put her in danger; a husband's desperate pleas may be the key to solving the case.

Young mother Heyzel Obando is shot to death in her home, and it will take old-school interrogation skills to catch the killer and bring justice to her grieving mother.

A group of women help bring down a smooth talking serial predator turned killer who lured young women with promises of fame and fortune.

A group of women help bring down a smooth talking serial predator turned killer who lured young women with promises of fame and fortune.

When Bonnie Craig was found dead, police collected DNA, but it didn't match anyone in the system; 12 years later there is a hit, but the man is thousands of miles away and, as it turns out, prosecutors need more than DNA to convict a killer.

A man is shot and killed while picking up his daughter for a court-ordered visit.

Survivors of the Westgate Mall attack in Nairobi, Kenya, share their stories.

A story of obsession that boils over into a brutal crime which takes years to bring to trial and the verdict is far from the end of the case.

New interviews with insiders reveal how career criminal Charles Manson convinced his followers to kill innocent victims and deliver him the fame he craved.

Fifty years after the infamous Manson Family murders, a look at the trail of the women who blindly followed Charles Manson; including new and exclusive interviews.

An investigation into the disappearance of an Iowa mother sends police in two states on a wild journey, during which they encounter a volatile love triangle, stolen identity, arson, and a relentless stalker.

The peaceful life of a retired North Carolina couple is shattered when a husband's body is found in his own garage, leaving investigators to sort out fact from fiction with the help of his wife.

A churchgoing southern woman loses her husband to tragedy, but a cloud of suspicion haunts her new marriage and leads investigators to a new conclusion.

After a bizarre account of suspected false identity is reported, authorities uncover a long history of an evasive criminal and launch a nationwide hunt to catch a killer who uses Southern charm as a weapon of deception.

In the 1970s, Ted Bundy murders at least 36 young women; glamorized as a handsome, well-educated killer who outsmarted the law, Bundy may have been an evil genius or a con artist posing as privileged to hide the monster in plain sight.

As notorious serial killer Ted Bundy awaited execution, he exchanged chilling letters with the woman he loved like a sister; now she finally reveals the untold story of the letters, and her harrowing journey with the man she discovered was a monster.

After South Carolina authorities locate a burned and abandoned vehicle, they are led to a brutal crime scene at a local church leader's home. Their small community is divided when an unforeseen perpetrator is found responsible.

As notorious serial killer Ted Bundy awaited execution, he exchanged chilling letters with the woman he loved like a sister; now she finally reveals the untold story of the letters, and her harrowing journey with the man she discovered was a monster.

Dr. Al Carlisle's descent into the violent mind begins by chance, when he's asked to run a psychological evaluation on a man who will go on to become one of America's most infamous serial killers: Theodore Robert Bundy.

Dr. Carlisle's evaluation of Ted Bundy is over, but his work on the notorious serial killer has just begun; as Dr. Carlisle develops his theory of the development of the violent mind, Bundy escapes from prison and goes on a murderous rampage.

In an exclusive interview, Emma Coronel, wife of drug lord Joaquín "El Chapo" Guzmán, reveals the seduction and danger of life with a criminal mastermind, while confronting the ugliest truths of his actions and grappling with her own accountability.

A family begins a relentless pursuit of justice after the death of Nevada attorney Susan Winters is ruled a suicide; Susan's parents open up about the seven-year case and their efforts to push back against the criminal justice system.

A family begins a relentless pursuit of justice after the death of Nevada attorney Susan Winters is ruled a suicide; Susan's parents open up about the seven-year case and their efforts to push back against the criminal justice system.

Debbie Hawk's three children arrive home to find their mother missing, with blood throughout the house; investigating who did this and why.

An entire region is on edge in April 1988 after college students Cassandra Hailey and Keith Call go missing from a lovers' lane area in northern Virginia.

When Annamaria Phelps and Daniel Lauer turn up dead in a lovers' lane area close to the Colonial Parkway in northern Virginia, many in law enforcement are convinced that this fourth double homicide in three years is the work of a serial killer.

A third grader wakes up to a nightmare, finding his mother stabbed nearly 40 times in her bed; the police suspect those closest to her as their investigation uncovers the shocking evil that crept inside her house that night.

A young teacher's assistant is raped and fatally shot in the middle of the night; her roommate, awakened by the noise, calls 911 and reports it as a suicide, beginning an intriguing mystery of motive, heartbreak and a tragic discovery.

In small-town Arkansas, as his wife sleeps nearby, a larger-than-life personality is silenced when a killer fires a single bullet into his head; suspects include the victim's wife and a jealous neighbor.

A yearslong investigation into the killer of Johnia Berry, who is stabbed more than 22 times in her Knoxville, Tenn., bedroom while her male roommate escapes.

After small-town newlyweds are found gunned down next to their car, Georgia detectives start a multistate investigation and discover just how far a criminal trio will go to prove itself.

Oklahoma detectives must untangle a twisted love triangle to discover the truth after a young man is shot in his own home.

An ordinary August day turns into a nightmare for the Bakersfield community when a local father is found murdered in a field; police are led down an unusual trail of evidence, leading to a killer caught on camera.

When a young, father-to-be is found murdered in his front yard in Florida, investigators chase down multiple leads and track a trail of deceit to bring a jealous killer to justice.

When the body of a young man is discovered burned beyond recognition, Alabama authorities sift through evidence to track down the unlikely couple at the center of this heinous crime.

A beloved pediatric doctor is beaten and drowned in his own home; when detectives surveil a suspect, the waters are muddied by lies, suspects on the run, and an international manhunt.

All leads run dry after a former film star is found shot to death in his home, but as investigators continue hunting down a suspect, they learn that this Hollywood drama has more twists and turns than any blockbuster hit.