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Murder, like true love, is written in the stars. Investigators, family and friends recount chilling cases of relationships that end in homicide.

44-year-old masseuse Larissa Macriello vanishes from her Miami apartment, and police discover a dangerous edge to her carefree lifestyle - but what is the real story.

A couple is shot in their own home but husband Dan Montecalvo survives. The investigation reveals a scheming killer who almost got away with the perfect murder.

Frightened that his ex-boyfriend will attack him, Billy ups his security and changes his locks; weeks later he disappears, and so does his cash. Where is Billy.

In Caulfield, Missouri, a local businesswoman is found stabbed to death at home. Police arrested two people in connection of this brutal murder.

Wisconsin police are shocked to find an elderly couple brutally murdered in their home. When family start receiving death threats, will murder strike again.

Washington Redskins star Sean Taylor is shot dead by an intruder in his Miami home. And when it comes to the rich and famous, it seems like everybody has a motive.

After a 59 year separation Bob and Fontelle marry following a whirlwind reunion. But two days before Fontelle relocates to California Bob disappears - where is he.

After a long battle with cancer, David Weedman is found dead in his home with a gunshot wound. Investigators soon turn their focus to David's best friends.

In 2005 Pamela Knight vanishes on her son's birthday and, years later, two men find the remains of a woman buried under an abandoned shed.

The body of a teenage girl is found in a culvert by an Arizona freeway. Earlier, in Washington State, a teen is on a quest for love after a troubled childhood.

Lost souls Frank and Angelina Rodriguez appear to have finally found true love. Then, a sudden death leads investigators to uncover a shocking tale.

Cynthia Smith and David Mueller's happy marriage is rocked by a tragic illness. When David dies, detectives uncover a sinister plot.

My Father Let The Darkness In. Lisa can't understand why her mum stays with her dad as he is cruel, unpredictable, and violent. When the end comes, it is even worse than she feared.

Matriarch Of Murder. When an innocent young mother turns up dead on the tracks, the small town of Findlay, Ohio, must figure out who would take the life of such a kind soul.

Part 2. Self-styled prophet Sheryl Ruthven manipulates followers to revere cats, driving them into isolation, financial ruin, and destructive rituals.

After she's fired from the police department, 19-year-old Laurie Bembenek becomes a Playboy Bunny. But soon, she's painted as a femme fatale and convicted of murder.

In 1968, actress Victoria Vetri became Playmate of the Year. But, when Sharon Tate is murdered by Charles Manson, Victoria is haunted by the crime.

In 2005 Pamela Knight vanishes on her son's birthday and, years later, two men find the remains of a woman buried under an abandoned shed.

The body of a teenage girl is found in a culvert by an Arizona freeway. Earlier, in Washington State, a teen is on a quest for love after a troubled childhood.

Lost souls Frank and Angelina Rodriguez appear to have finally found true love. Then, a sudden death leads investigators to uncover a shocking tale.

Cynthia Smith and David Mueller's happy marriage is rocked by a tragic illness. When David dies, detectives uncover a sinister plot.

The body of a teenage girl is found in a culvert by an Arizona freeway. Earlier, in Washington State, a teen is on a quest for love after a troubled childhood.

Wisconsin police are shocked to find an elderly couple brutally murdered in their home. When family start receiving death threats, will murder strike again.

Washington Redskins star Sean Taylor is shot dead by an intruder in his Miami home. And when it comes to the rich and famous, it seems like everybody has a motive.

After a 59 year separation Bob and Fontelle marry following a whirlwind reunion. But two days before Fontelle relocates to California Bob disappears - where is he.

After a long battle with cancer, David Weedman is found dead in his home with a gunshot wound. Investigators soon turn their focus to David's best friends.

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.

Big game hunter Bob is fooled by a predatory con artist and puts a $1000 deposit on a non-existent Thunderbird; but will his search for his money end well.

In Osakis, Minnesota, a baseball-loving wife and mother is found unconscious at home. Investigators turn to family, friends and locals to piece together what happened.

Codi Joyce died at a house party after a fight in 2015 and nobody was ever charged for his murder. What really happened that night and why will no witnesses talk.

In 1996, beloved teacher Norma Luobikis was found stabbed to death in her home. Evidence suggests an intimate bond between the victim and her killer.

When Laci Peterson went missing, her husband claimed he last saw her before he went fishing - but his secret mistress exposed his lies. Experts examine his behaviour.

When a young mother is reported missing, her husband invites a TV crew to clear his name. The experts analyse his statements for signs of deception.

In California, police face-off against a knife wielding bodybuilder. Plus, a wanted criminal draws an officer into a brawl in a sex shop.

A wife wakes to find her husband dead outside in the snow, she calls 911. But when the police discover a volatile history, suspicions are aroused.

In New York, a camera catches a murder, and a killer is brought to justice. In Texas, police use surveillance cameras to track down a gunman.

When a 17-year-old girl was attacked and murdered in her Wiltshire home, her killer was until the day before her boyfriend. What made him turn killer.

A 17-year-old girl was out with friends in an East London park when she was stabbed by unknown assailants. Fatally, it was a case of mistaken identity.

Codi Joyce died at a house party after a fight in 2015 and nobody was ever charged for his murder. What really happened that night and why will no witnesses talk.

In 1996, beloved teacher Norma Luobikis was found stabbed to death in her home. Evidence suggests an intimate bond between the victim and her killer.

When Laci Peterson went missing, her husband claimed he last saw her before he went fishing - but his secret mistress exposed his lies. Experts examine his behaviour.

When a young mother is reported missing, her husband invites a TV crew to clear his name. The experts analyse his statements for signs of deception.

In 1996, beloved teacher Norma Luobikis was found stabbed to death in her home. Evidence suggests an intimate bond between the victim and her killer.

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.

Big game hunter Bob is fooled by a predatory con artist and puts a $1000 deposit on a non-existent Thunderbird; but will his search for his money end well.

In Osakis, Minnesota, a baseball-loving wife and mother is found unconscious at home. Investigators turn to family, friends and locals to piece together what happened.

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.

Matrice is arrested when she can't pay her restaurant bill; but after cops release her into the night without her car, keys, or cash, she disappears. Where is she.

In Montrose, Colorado, a woman's body was discovered in the quarry that she owned. After three years, police were still investigating the brutal murder.

Who Wanted Him Dead? A US soldier meets harm in Upstate New York, and his killers may have been his fellow GIs. A missing man's haunting voicemail is his final clue.

A 10-year-old girl walks home from her friend's house and then mysteriously vanishes. And, a night of celebration ends in murder for a young entrepreneur.

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 young actress gets her big break in a hit movie. After her brutal murder, police sift through hours of surveillance to catch her killer in the act.

A former mayor of an Ohio town turns up dead in his hunting cabin. Detective Ryan Allar explores whether this is political retaliation or something more personal.

A house on Elm Street goes up in flames, leaving two people dead. Police race the clock to catch the killer before they strike again.