Stalker kills a woman in a pool

This harrowing half-hour archive series revisits some of the most brutal killers in modern history, reviewing news footage and the words of the killers themselves to see which terrifying traits each killer exhibited. What are the signs...of evil?

Siblings Mimi and Luke unwittingly resurrect an ancient alien overlord. Using a magical amulet, they force the monster to obey their childish whims, and accidentally attract a rogues’ gallery of intergalactic assassins to small-town suburbia.

During a hallucinatory incident, Kristen Parker has her wrists slashed by dream-stalking monster, Freddy Krueger. Her mother, mistaking the wounds for a suicide attempt, sends her to a psychiatric ward, where she joins a group of similarly troubled teens.

Researchers on the undersea lab Aquatica have genetically altered the brains of captive sharks to develop a cure for Alzheimer's disease. But there's an unexpected side effect: the sharks got smarter, faster, and more dangerous. After a big storm damages their remote research facility, they must fight for their lives.

The wife of a British Judge is caught in a self-destructive love affair with a Royal Air Force pilot.

International students at an elite Prague school are stalked and murdered by a masked killer while holding a party in an abandoned water park.

Left alone to clean up a 6-meter-deep deserted pool, Day falls asleep on an inflatable raft. When he wakes, the water level has sunk so low that he can't climb out on his own. Stuck in the pool, Day screams for help, but the only thing that hears him is a creature from a nearby crocodile farm.

Obsessed by a woman, an unstable man starts a restless hunt.