On a cold London night, homicide detective Vincent Ruiz is fished out of the Thames with a bullet in his leg and an even bigger hole in his memory. He has no recollection of the shooting or how he finished in the river.
The only clue is a photograph found in his pocket of Mickey Carlyle, a seven-year-old girl who went missing three years earlier. A man was convicted of her murder. But what if the police got it wrong? Ruiz's only hope of unravelling the puzzle is to retrace his steps and re-create the night of the shooting. Under investigation by his colleagues and accused of faking amnesia, he turns to Joe O'Loughlin, a clinical psychologist, who he hopes can unlock his memories.
Step by step, they piece together a story of grief, vengeance, and the search for redemption.