AllMovie

A man with the power to guide people back into their memories seeks to determine whether a troubled teenage girl is a cunning sociopath, or the anguished victim of repressed suffering in this mind-bending psychological thriller. John (Mark Strong) has a unique gift for exploring other people's memories -- a talent that he used to assist in police investigations until the day he suffered a stroke during a particularly intense session. He's never been the same since, and after his wife dies, John is left destitute and alone. Later, when John happens across the unusual case of Anna (Taissa Farmiga), the highly intelligent scion of a wealthy family who is currently staging a hunger strike, he senses an opportunity to once again use his powers for good. Now the deeper John probes into Anna's mystery-shrouded past, however, the more he begins to suspect that she's a master manipulator, and that she could be guiding him down a very dangerous path.