Devil (2010)

M. Night Shyamalan’s “Devil” is about a detective whose wife and son were killed in a hit and run who. He is sent to investigate the suicide of a person who jumped from a skyscraper. In the same building, a group of people is trapped in an elevator. One by one people start dying. Who’s doing it? Everyone is a possible suspect with a shady past. Very cool movie. with a creepy ending.