Long ago, Carl Feldman was acquitted of murder. Now he lives alone in Texas with a few fading memories. Until the day his daughter arrives and takes him away. Only she's not his daughter. This woman is sure Carl's a murderer, and that he's killed others. Including her sister Rachel. Now they're visiting old crime scenes to see if Carl remembers any of it. To discover what happened to Rachel. Has Carl really forgotten what he did or is he only pretending? Has this young woman made a terrible mistake? Because if Carl really is a serial killer, she's in a very bad place.