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42-year-old Miami mum Raquel Calderin vanishes without a trace on her way home from work. The investigation leads detectives into a disturbing family picture.

26-year-old car dealer Christopher O'Brien takes a strange man for a test drive and never returns. Did O'Brien's criminal past finally catch up with him.

Film director Adrienne Shelly is discovered hanging by a bed sheet in her bathroom. It looks like a suicide, but her husband insists it was murder. What's the truth.

Just after moving with his girlfriend, Daniel Ott is shot dead by an intruder. A stunning coincidence leads to one of the USA's the most dangerous criminal rings.

A skeleton is discovered on the edge of a high school football field. It takes a forensic sculptor and tireless detective work to finally bring the killer to justice.

A police officer is shot dead in a suspected set-up. Detectives take drastic measures to get answers from a tight-lipped local community.

In 2005, a pregnant mother goes missing in Philadelphia. Detectives stumble on a love-triangle that may explain the secrets behind her death.

When teenager Harmahn Smith misses his curfew, his parents seek the police's help. His car and body are discovered - what happened to the 18-year-old.

Is Rodney Reed Innocent? A Texas woman is brutally raped and murdered, and the trial sparks a racially charged debate over whether an innocent man has been condemned to death.

The Freeman family trailer is burned to the ground and the parents are found dead with gunshot wounds, but their teenage daughter and her friend are missing.

Five young people disappear over a span of four years in the rural area of Lewis-Clark Valley. Investigators search for links to the mysterious cases.

During an armed robbery, a father of three is fatally shot. 23 years later, another family questions if the wrong man is behind bars.

Sunny Hostin travels to the quiet coastal town of Milford, Connecticut to revisit the murder of Kelsey Monahon, a 28-year-old pregnant woman.

Influencer Mackenzie Shirilla seemingly has it all. But a tragic accident reveals the dark side of social media, where jealousy and rivalry turn dangerous.

Aaron Carter goes public saying he supports the women's allegations against his brother. At the same time, his behaviour becomes increasingly erratic.

Aaron's struggles with addiction and mental illness come to a tragic conclusion. Nick faces more allegations, and his accusers take their cases to court.

On Holy Saturday morning, a nun is murdered in the chapel where she works in Ohio. Police discover shocking lies and sadistic secrets leading to her death.

The body of a 19-year-old girl is found miles from her job at a gas station. After the killing, suspicions mount over several young men in the community.

17-year old Shafelia's disappearance was a mystery - until her sister is arrested for a robbery. Carol Wardell vanished and her husband left tied-up.

Bestselling author, Helen Bailey, was a wealthy widow. After finding love again with Ian Stewart she vanished. He helps in the search - but was it a cover-up.

In Phoenix, a wave of late night sexual assaults appears to be the work of a serial rapist, who targets women in their own homes while they sleep.

When Jamey Walker is kidnapped and murdered in the spring of 1981, her mother Eleanor dedicates the rest of her life to finding the killer.

A burning car is found by the side of a highway on the same night a single mother of two is reported missing. The two events lead investigators to a notorious criminal.

An air force veteran disappears along with his savings. Detectives discover a woman has been draining his accounts, then uncover a conspiracy of greed and murder.

In 1994, Lake Orion, Michigan is rocked by a vicious murder. The crime is a mystery, until police expose a strange and twisted plot that no one saw coming.

When three women die of the same mysterious illness, the hunt is on to prove their deaths were no accident. Can detectives unravel this twisted tale of deceit.

Two police departments in California join forces to find the vicious killer of two separate Jane Doe victims, murdered in a shockingly similar way.

In California, the terrifying abduction of a young girl sends a relentless detective on a quest to bring justice to her heartbroken family.

Will a trail of blood from the balcony of a young woman's apartment to the complex's parking lot lead police to her cold and calculating killer.

A young mother is brutally murdered inside her own home. Will her family's relentless quest for justice help put her killer behind bars.

A family's newfound American dream becomes a nightmare after their home is set ablaze. But is this just a freak accident or a cover-up for a more sinister crime.

Clowns. Murder. In 1990, a clown delivering flowers and balloons guns down a woman at home. With scant evidence, the culprit eludes justice for thirty years.

A young woman's violent murder in 1972 plagues Hawaii investigators for decades until a new investigative technique emerges.

Where Is Kristin Smart? In 1996, a college co-ed vanishes and is presumed dead. Decades later, a discovery found six feet under turns the case upside down.

A popular teacher is found dead in her Staten Island condo. As detectives dig deeper into the case, they uncover a wealth of secrets, lies and sins.

After a tragic murder in Cornwall that left his sister and four of her children dead, Peter Wyatt opens up about his violent, controlling brother-in-law, Lee Ford.

For decades, a predator stalks unnoticed. Whispers grow - missing women, unsolved attacks. A breakthrough reveals the killer never left the town.

A 13-year-old boy comes home to find his stepmother murdered and his 15-year-old sister missing. Police race to piece together a killer's video trail.

A Minnesota woman vanishes from a mall after a date with her estranged husband. A shocking discovery in a parking lot leads police to CCTV footage.

In the small town of Ocala, Florida, a teenager falls victim to a young psychopath, a vengeful ex-girlfriend and a few of their delinquent friends.

A young husband is found brutally murdered in his Deerfield, Ohio, home. The prime suspect is his vindictive and highly psychopathic wife.

G Or Gent? Baron 'Dirty' Colon goes on the reality show 'From G's to Gents,' hoping to change his life and win the 100k prize. His real motivation is a secret.

A runway model turned mom-a-ger lived a fairytale life of luxury. When she turns up dead at the bottom of her pool, police uncover deep motives.

A serial arsonist murders four people in a California store. Two fire detectives take a special interest in the case and someone gets burnt when the truth is revealed.

Steven Willis' life is turned upside down when a family member is murdered. He embarks on a search for the killer and three more people die before he learns the truth.

When Sueanne Hobson weds a widower with a son, life seems perfect. But her relationship with her stepson is in such turmoil that she decides to make him disappear forever.

Growing up with a disfigured face, Patti vows to get the last laugh as an adult. When she marries a father of three, she turns their lives into a world of murder.

Nancy was always curious about her mother's rich friend, Marjorie. But when she fully enters her life, she becomes entwined in a series of bizarre crimes.

Debra Hartmann craved a life of luxury and seemed to have it all - fur coats, fancy car, and a boyfriend. But one thing was standing in her way - her husband.

A serial arsonist murders four people in a California store. Two fire detectives take a special interest in the case and someone gets burnt when the truth is revealed.

Stockbroker Joe Pikul and his wife Diane live the New York high life - but when she discovers his secret life, their marriage crashes, with a violent end.

In a rich California suburb, popular cheerleader Kirsten Costas is stabbed to death. A teenage girl is seen fleeing the scene - does someone know the killer.

When Randy Scheffield's family finds him dead in his bed, they suspect a heart attack. But police uncover a murder conspiracy that will shatter this small town.

When Jeffery Locker is found stabbed to death, detectives suspect he was in the wrong place at the wrong time. But the truth, they learn, is far more shocking.

When Peggy Perez-Olivo is shot in the head her husband Carlos insists they were victims of carjackers. The horror that follows will shock even experienced investigators.

Peter Theriault hasn't missed a day of work in almost 30 years. So, when he fails to arrive for his shift, friends and family suspect something is very wrong.

Experts analyse a man's deception following the Manchester Arena terror attack. Police tapes expose a man who murdered his wife and hid her body in the freezer.

When arrested for historic sexual offences, TV weatherman Fred Talbot tried to hide the truth in police interviews. His repeated response of 'no comment' speaks volumes.

When 19-year-old college student Christa Sallani goes missing, police fear the worst. Investigators are in the dark until a key witness breaks the case widen open.

In 1998, an unidentified woman is found bound, frozen and shot to death in the mountains of Utah. Police race to find her killer.

A killer executes a seemingly perfect family. Detectives uncover seething tensions resulting from an obsessive love affair with a webcam model.

Two football players are shot to death, shattering two small Texas towns. But the tragedy only gets worse when the community learn who the killer is.

When a star footballer is stabbed to death, it initially looks to be a random tragedy. But investigators soon expose a calculated takedown by a jealous team.

When Randy Scheffield's family finds him dead in his bed, they suspect a heart attack. But police uncover a murder conspiracy that will shatter this small town.

When Jeffery Locker is found stabbed to death, detectives suspect he was in the wrong place at the wrong time. But the truth, they learn, is far more shocking.

Experts analyse a man's deception following the Manchester Arena terror attack. Police tapes expose a man who murdered his wife and hid her body in the freezer.

When arrested for historic sexual offences, TV weatherman Fred Talbot tried to hide the truth in police interviews. His repeated response of 'no comment' speaks volumes.

When Randy Scheffield's family finds him dead in his bed, they suspect a heart attack. But police uncover a murder conspiracy that will shatter this small town.

When Jeffery Locker is found stabbed to death, detectives suspect he was in the wrong place at the wrong time. But the truth, they learn, is far more shocking.

When Peggy Perez-Olivo is shot in the head her husband Carlos insists they were victims of carjackers. The horror that follows will shock even experienced investigators.

Peter Theriault hasn't missed a day of work in almost 30 years. So, when he fails to arrive for his shift, friends and family suspect something is very wrong.

Experts analyse a man's deception following the Manchester Arena terror attack. Police tapes expose a man who murdered his wife and hid her body in the freezer.

When rising star Rebecca Schaeffer is murdered, Hollywood panics. Detectives investigate who killed the beloved actress, and if a copycat killer is on the loose.

31-year-old violinist Helen Mintiks is found murdered in an airshaft at the Metropolitan Opera House. Could there be a real life Phantom of the Opera.

When a tip from a missing persons' network helps identify the body of a John Doe murder victim, investigators' questioning unravels a dark tale of betrayal.

In North Port, Florida, police get a call that a young mother has vanished from her home. A trail of incoming 911 calls leads officers on a hunt for her abductor.

In Dayton, Ohio, a young mother goes missing after attending a party one evening. When her body is found, her identical twin is certain foul play was involved.

When a young woman in Overland Park, Kansas disappears after visiting the mall, store CCTV footage reveals an abduction. Days later, her body is found in the woods.

A psychiatrist and his adult son are killed execution-style. The case goes cold until an attempted armed car robbery provides an odd link to the double homicide.

In Southwest Florida, Terrance Williams, a young father, disappears. When his mother retraces his steps, she uncovers something ominous.

In 1990, two young men confessed to a double murder in self-defence. But 30 years later they have very different stories of what happened that night.

Debra Rode Lambert, older sister of the Oregon serial killer, shares how the warning signs showed in her little brother Jimmy from the age of four.