Xander Shute - once a wealthy banker, now living on the streets - shelters for the night in an empty Mayfair flat. When he hears the occupants returning home, he scrambles to hide. Trapped in his hiding place, he hears the couple argue, and he soon finds himself witnessing a vicious murder. But who was the dead woman, who the police later tell him can't have been there? And why is the man Xander saw her with evading justice? As Xander searches for answers, his memory of the crime comes under scrutiny, forcing him to confront his long-buried past and the stories he's told about himself. How much he is willing to risk to understand the brutal truth?