P.O.E. (2007)

Somebody has just pulled off a big-money heist in this gritty, sexy crime mystery. The four strangers who get ripped off are confined together in a mysterious room, compelled to interrogate each other and reveal their own stories until each is eliminated as the perpetrator of the crime. In a tense psychological standoff, the victims get the shock of a lifetime when they finally uncover the identity of the true mastermind - someone they all know immediately.