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Workouts turn a group of fitness fanatics into bitter rivals. As the competition heats up, it's not just buff bodies and tight abs on the line.

When Frank Hilley is struck down by a mysterious sickness, the town of Anniston grieves. But suspicions arise after his daughter also falls seriously ill.

After taping their TV show in rural Vermont, Chrissy and Charlie Billis have a terrible car accident. Only one survives. Do tapes offer a clue to what happened.

21-year-old Kortne Stouffer vanishes from her bed one night after rowing with neighbours and friends. Investigators pursue various leads, but she cannot be found.

When someone stabs Trina Langenbrunner and leaves her on a road in Minnesota, her community and law enforcement work together for over 12 years to find her killer.

In Colorado, the idyllic life of spouses Harold and Toni Henthorn is shattered by a deadly hiking accident. But their happy home videos conceal a deadly predator.

After moving to a remote Colorado town, Ron and Cynthia Phillips and their kids struggle to adjust. But their home videos mask darker impulses that lead to murder.

20-year-old Bear Diaz has diabetes, so when he vanishes one night with his belongings, investigators are suspicious. Is it linked to another disappearance.

After James Skinner turns up dead in his own bedroom, the community of Brownstown enters a paranoid spiral, unsure who killed this beloved local rodeo rider.

After combatting a raging fire in a SUV, firefighters discover the charred remains of a beloved local man who was reported missing just hours earlier.

When an Air Force veteran disappears, Investigators think it's a straightforward missing persons case. But the case quickly morphs into a puzzle of fraud and murder.

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.

A frantic student calls 911 to say she shot her boyfriend in self-defence. Police soon discover they are face-to-face with a remorseless psychopath.

Pastor Schirmer is a local celebrity beloved by his community. However, as investigators examine the deaths of his previous wives, a monster emerges.