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Suspicious signs lead to shocking revelations in these true stories of people who discovered they lived with a killer. Will they become entangled in evil?

Suspicious signs lead to shocking revelations in these true stories of people who discovered they lived with a killer. Will they become entangled in evil?

Two teenagers are brutally attacked by a stranger in a park in Portland, Texas. Helped by the survivor, police desperately hunt for the callous killer.

22-year-old Erin Belanger and her boyfriend Francisco "Flacco" Roman move to Deltona, Florida, hoping for a new start - unaware of the danger awaiting them.

When Susan Smith becomes a FBI informant, her list of enemies grows by the day. So when she disappears, it's anyone's guess as to what really happened to her.

When a mother of two suddenly vanishes, her husband claims she ran off with another lover. But her family suspects something much worse. 14 years later, the truth emerges.

The stories of these perpetrators may be different, but their motives are always the same: to stay out of prison and live life on the run.

The stories of these perpetrators may be different, but their motives are always the same: to stay out of prison and live life on the run.

True crime investigation using body-camera footage from police departments all over America. What dramatic twists and turns will lead to catching the killer?

An up-close and personal look at the front line of policing, using real footage from police body cameras. Life on patrol can be anything but routine.

When detectives find an elderly woman dead and violated, they learn the culprit is a troubled teen with a fantasy to rape and kill.

When detectives find a woman bloodied and lifeless in her house, they reveal a psychopath reenacting a revenge fantasy inspired by a movie.

Suspicious signs lead to shocking revelations in these true stories of people who discovered they lived with a killer. Will they become entangled in evil?

True crime investigation using body-camera footage from police departments all over America. What dramatic twists and turns will lead to catching the killer?

The stories of these perpetrators may be different, but their motives are always the same: to stay out of prison and live life on the run.

Two teenagers are brutally attacked by a stranger in a park in Portland, Texas. Helped by the survivor, police desperately hunt for the callous killer.