“Shut In” (*1/2 out of four) was a desultory suspense thriller about a single mom (Rainey Qualley) who is locked in a closet by her abusive former boyfriend (Jake Horowitz) and child-molester friend (Vincent Gallo) who in turn threaten her children so she has to outsmart them and stay alive and try to escape. Yet another woman-in-jeopardy/woman-stuck-in-the-house thriller which makes the viewer simultaneously feel stuck. Qualley’s strong performance is the one bright spot for this one-note and (at times) deeply unpleasant film. A disappointment from director D.J. Caruso who did solid work on “Eagle Eye” and “Disturbia.”