After winning an Oscar for playing an abducted mother in "Room," actress Brie Larson returned on Friday with a movie in which she becomes trapped in a warehouse with a group of trigger-happy men. Larson, who helped debut "Room" a year ago at the Toronto International Film Festival and went on to win best actress at this year's Academy Awards, stars alongside an ensemble including Armie Hammer, Cillian Murphy and Sharlto Copley in "Free Fire," a dark comedy featuring a tense two-hour shoot-out. Set in Boston, "Free Fire," directed by Ben Wheatley, sees two groups of Irish, American and South African criminals meet at a derelict warehouse to conduct an arms deal that quickly goes wrong.