In Parker Florida, a teenager is found dead days after reconnecting with his birth mother. The teen's mysterious girlfriend leads investigators into a world of occultism and revenge that exposes the secret lives of the victim's friends.

The body of a 19-year- old man turns up in Spearfish, South Dakota and police launch a nationwide search for suspects. When an informant comes forward with clues, detectives realize the murder may be part of a sexual domination plot.

When the battered corpse of a young woman turns up on the outskirts of Fallbrook, California, detectives unravel a secret world where dominance, sadomasochism, and manipulation reign.

In Bellevue, WA, a teenager is found slain in a local park. As those closest to the victim lead investigators down the rabbit hole, a conspiracy is slowly unearthed, revealing this victim isn't the only one with a target on her back.

In Bellevue, NE, a group of teens venture into the very adult world of "partner swapping," only to find they are flirting with disaster when one of them ends up dead in a drainage ditch.

A popular teenager's body is discovered along an abandoned trail. Interviews reveal a dark side to his closest relationships, as a tale of jealousy and resentment emerges-along with an unlikely murder mastermind.

A fun-loving 25-year-old man is gunned down on the railroad tracks in Manor, Pa., turning his best friends into murder suspects.

In Las Vegas, five teenagers work out constantly to optimize their strength training, then the crew's strongest member is found dead and buried in the desert, turning his best friends into murder suspects.

In Hollywood, Florida, the body of a young man is found at the edge of the Everglades, and homicide investigators must wade into a sordid case of bullying, revenge and secret relationships.

When a North Carolina teenager becomes convinced that someone wants him dead, his friends help him lay low at an abandoned property, then the teenager winds up dead, turning all of his friends into suspects.