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When police find 64-year-old nurse Athena Valentiny brutally murdered in her home, investigators follow the digital trail her killer left behind.

After the murder of young mother Morgan Ashlye Fox, investigators don't have much physical evidence to go on. Digital evidence reveals the secrets of a monster.

When widow Valena Shepherd is found dead at home, police suspect foul play. Investigators follow digital clues that suggest Valena knew her killer.

When 12-year-old Aynis Vargas dies in a seemingly random attack, investigators piece together clues from social media, cell phone data and surveillance footage.

When high-profile DA Ray Gricar goes missing, his laptop and hard drive are found destroyed in the Susquehanna River. Was Ray murdered, or is he on the run.

Susie, Stacey and her mum go missing from their home in the middle of the night. Is their disappearance linked to the activities of a serial sexual predator.

When rebellious teen Samantha Bonnell goes missing, her co-workers claim she just walked out of a cinema and vanished. Are they telling the truth.

Firefighter Brandy Hall's abandoned and blood-stained truck is found submerged in a local pond. What happened to this popular mum and where is she now.

Carol-Ann and James Sharp seem like the perfect couple. But behind the veneer of happiness in home movies lie dark secrets - and an unlikely killer.

In a small town, the lives of two couples are unravelled by a series of betrayals, deceit and violence. How did a love affair result in a crime of passion.

When Dr Jim Kohnle is found dead in a fire at his family home, evidence and tip-offs lead police to question if it was an accident, suicide or murder.

Todd and Rachel Winkler seemed to be a happily married couple. But, behind closed doors, the couple faced many issues and it eventually led to a brutal murder.

When the young wife of a Naval Lieutenant is found beaten by the side of the road in Honolulu in 1931, the repercussions lead to murder and a sensational trial.

In 2018, police search a backyard in Florida for a body after a once-idyllic marriage sours and turns vengeful, filled with lies and affairs.

A detective suspects a long-haul trucker may be the Happy Face Killer, one of history's most disturbed serial murderers. He hatches a plot to outwit him.

The Barnetts, now divorced, abandon Natalia in an apartment in Indiana. When the police get involved, Michael's confessions lead to their arrest.

After years of waiting, Michael's trial is finally underway. A mysterious new witness appears and offers damning testimony that could ruin Michael.

A woman finds a young mother murdered following a festive New Year's celebration. Can police trace her last known steps and find her killer.

When a woman is found murdered in her home, police use a frantic 911 call from the night of the crime to identify her killer.

A group of girls begin lifelong friendships at church camp. Life takes them down different roads and their bonds remain until one of them disappears.

When a Homecoming Queen and a Dairy Princess are murdered in Marathon County, Wisconsin, detectives question a pool of suspects, from strangers to frenemies.

After a string of failed relationships, Veronica thinks single dad, Russ, is perfect. But daughter, Kimberly, and the growing family vex this stepmother.

Donna is beautiful and maternal - just what Dennis Yaklich needs as a single dad. But soon his four kids see her dark side, from bullying them to stealing money.

Newly-single Colleen Batten struggles after the death of her husband, until she meets old flame, Bob Harris. His kids soon discover how evil she can be.

Widower Jerry Barker gets his life back on track when he marries Rebecca Osborne. But his children fear the worst when they uncover their stepmother's dark secret.

When a dancer is shot dead in her home, detectives try to figure out who had a motive to kill her. A cigarette found at the scene may provide answers.

When a mother disappears from her home, suspicion moves from one admirer to another. Will a surprise confession solve the mystery.

When LeRyan Nicholson's sisters investigate his disappearance, they uncover a series of secrets that lead them to the heart-breaking truth.

When woman is stabbed to death in broad daylight, police think she knew her killer. And, new evidence after a deadly house fire points to arson.

Arthur Burney was a fun-loving, protective father and grandfather. But, one day he walks out on the family after falling in love with another woman.

Amanda Schmitt was doing her dream job nannying two children. Then, her relationship with the father turns romantic, but they don't get their happy ending.

A millionaire doctor and his wife enjoyed a glamorous lifestyle. But, behind closed doors, they were troubled by deceit and violence which eventually turned deadly.

Two men had been best friends since growing up together in California. What caused their relationship to break down in a devastating and bloody way.

Cindy Monkman is looking for something serious and Michael Apelt seems to be her perfect match, until their first Christmas together turns into a horror story.

The murders of two young boys puts a tragic end to their short lives. When the case goes cold, their mothers begin their own quest for answers.

In 2007, a devastating house fire in Dallas Township, Pennsylvania, reveals the nearly decapitated body of a pornographic film director.

A garage with three dead bodies leads detectives to a lurid affair, stories of embezzlement, and a crafty Casanova who mysteriously disappears.

For a group of resort employees, the isolated mountain where they work is anything but paradise when one of them goes missing. Is there a killer amongst them.

Fun-loving co-workers at a restaurant appear to be the best of friends - until one of their own is found dead on a soccer field at the edge of town.

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.

Successful business owner MaryAnn Clibbery is brutally murdered in Illinois. A suspicious bag floating on the ice in the river unlocks the secrets of her slaying.

An affluent retirement community in Ohio is baffled when Barbara Howe vanishes one night. But soon Police find her body in the trunk of her car.

A lunch break becomes a nightmare for two secretaries who vanish in broad daylight. One woman is found dead, launching a desperate search for her missing friend.

An employee of an exotic wildlife park vanishes. As the search for the missing woman intensifies, investigators fear that the predator responsible is not an animal.

A retail store employee's crush on his manager escalates into an obsession. When she moves state, the stalker tracks her down to carry out a twist plan.

A massage therapist from Virginia Beach disappears before work. Weeks later, a cyclist makes a discovery that will rock the town and change lives forever.

Successful business owner MaryAnn Clibbery is brutally murdered in Illinois. A suspicious bag floating on the ice in the river unlocks the secrets of her slaying.

Sandy Miles and her daughter appear to have an unbreakable bond. When Sandy is found brutally murdered, the investigators can scarcely believe what they uncover.

Have You Seen This Woman? A couple raise their children in an idyllic rural town. But, their quiet lives are turned upside down when two of the family are found brutally murdered.

High school student Brandon Wentzell falls for Clarissa Chistiakov online. But the course of virtual love doesn't run smooth as the past collides with a toxic present.

50-year-old Beverly Carter is an internet savvy real-estate agent. But when she goes to meet a prospective buyer at a remote house, she never returns.

Jessika Rovell falls for Jeffrey Marsalis' charms and good looks, but his secret online life reveals a monster. Will the police stop his reign of terror.

Wrong. When Nikki McPhatter doesn't show up for her usual work shift, her friends immediately worry - and point investigators to her online relationships.

When a young woman is brutally murdered in her home, police must sort through confessions and lies in their hunt for a cold and calculating killer.

A young girl vanishes on a trip to the mailbox. Will her abandoned pink bicycle be the key to solving the disturbing mystery.

In 2007, a devastating house fire in Dallas Township, Pennsylvania, reveals the nearly decapitated body of a pornographic film director.

The Serial Killer Who Only Killed Once. The weekend before Thanksgiving, a killer slays Robin Lawrence at home while her child is asleep. A relentless investigation circles her husband.