Another Americanized version of a horror film from the Japanese Ring factory, this is one of those unsettling thrillers that could be taking place entirely within the main character’s head. Jennifer Connelly stars as a recently divorced mother trying to prove that she can raise her young daughter on her own. When a few highly unusual plumbing problems arise in the dingy apartment she has found, we’re never quite sure if something really is amiss or if the pressure has finally made her crack. Connelly’s nuanced performance anchors this well-crafted effort from director Walter Salles (Motorcycle Diaries).