Possession 2008

Happily married Jessica (Sarah Michelle Gellar) deals with the fallout of a terrible tragedy when her husband (Michael Landes) and his brother (Lee Pace) both wind up in comas after a car accident. Even worse, when the brother awakens, he's convinced he's Jessica's husband. He seems to know details of Jessica's life that only his brother would be familiar with, prompting Jessica to suspect that a supernatural force is at work.