When Mr. Harrigan dies, the teen who befriended and did odd jobs for him, puts his smart phone in his pocket before burial and when the lonely youth leaves his dead friend a message, he is shocked to get a return text.

After being abducted by a child killer and locked in a soundproof basement, a 13-year-old boy starts receiving calls on a disconnected phone from the killer's previous victims.

Publicist Stuart Shepard finds himself trapped in a phone booth, pinned down by an extortionist's sniper rifle. Unable to leave or receive outside help, Stuart's negotiation with the caller leads to a jaw-dropping climax.

Years after the death of her father, college student Fiona Stephens and her friends struggle to escape the grasp of a masked psychopath, hellbent on their brutal murders.