Devil is a movie from M. Night Shyamalan – yeah, the guy who did “I can see dead people” Sixth Sense. It stars Chris Messina as Detective Bowden, Bokeem Woodbine as Ben Larson and Caroline Dhavernas as Elsa Nahai.
In plot terms – pretty simple stuff but horribly effective. A group a people are trapped in an elevator and they work out the devil is among them.