You're Next
Nick wakes up in a dark room, he tries to look around, more accurately, feel around in the pitch black darkness and finds a box of matches. He lights it up, and sees there's a candle right where he found the matches, he lights it up and tries to figure out where he is.
The candle light reveals it's a dark, damp windowless room with one door and no other way out. He calls for help and tries a few times to break the heavy door but it's a useless effort.
Suddenly out of the pitch black emptiness the sound of a beeping countdown of 10 seconds and again silence.
Suddenly the sound of a man screaming at the top of his lungs.
"No No No aaaaaaahhhhhhhhh, ahhhhhhhhhhh" and the scream turns to a gurgle and fades away and it's dead...