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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.

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.

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.

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.

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.

I Always Knew I Could Kill. Patrick Pidock's daughter lived in constant fear of her father's sudden, violent outbursts. But no one could know what he was truly capable of.

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.

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 single mother turns to exotic dancing to support her family. But the temptation to make much more money leads to devastating consequences.

In the 1970's, Anneka Di Lorenzo found fame as a successful model in Penthouse Magazine. However, from that point, her life unravelled with tragic consequences.

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 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.

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.

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 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.

Detectives investigate the death of a teenager with special needs in New York. Body cam video and original audio capture detectives' hunt for what happened.

When a 69-year-old man goes missing in Kalamazoo, Michigan, neighbours seem to be hiding information from police. What happened to him.

On New Year's Eve, a domestic dispute ends in tragedy when two deputies are trapped with a gun-wielding suspect. In Iowa, a high-speed pursuit comes to a gruesome end.

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

When beloved teacher Margaret Jack Sliger is murdered on her farm, there is little evidence to go on. Will detectives find the killer and bring the community justice.

When 18-year-old Julie Heath goes missing in rural Arkansas, the small town begins a desperate search for her. But no one expects the horror that ensues.

The Twelve Signs He Will Die. A copycat Zodiac killer terrorises New York City while keeping cops guessing his identity. It falls to veteran NYPD detectives to outwit him.

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.

Detectives investigate the death of a teenager with special needs in New York. Body cam video and original audio capture detectives' hunt for what happened.

When a 69-year-old man goes missing in Kalamazoo, Michigan, neighbours seem to be hiding information from police. What happened to him.

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.

Detectives investigate the death of a teenager with special needs in New York. Body cam video and original audio capture detectives' hunt for what happened.

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.

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.

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 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.