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.
 
Answer the call.
 
FUN FACT:  "I think it's fair to say he's my favorite actor I've worked with," said Derrickson about Ethan Hawke. He recalls trying to convince Hawke to do Sinister (2012) despite the actor's protestations that he didn't really like or watch horror. Hawke had been concerned it would be a dark experience, but Derrickson convinced him that it's actually a lot of fun making horror movies. He had to be convinced once again for this film, but it was because he doesn't really play villains and told Derrickson the script would have to be great for him to sign on. Hawke called back that night after reading it, left a voicemail in the voice of The Grabber, and Derrickson knew he had him hooked.