Lost — Michael Robotham

On a cold London night, homicide detective Vincent Ruiz is fished out of the Thames with a bullet in his leg and no memory of the circumstances surrounding the shooting. In his pocket is a photograph of Mickey Carlyle, a seven-year-old girl kidnapped three years before and presumed dead. It's anybody's guess what Ruiz was up to--especially when a blood-spattered boat discovered nearby makes it clear that Ruiz was not the sole casualty. But with Mickey's killer convicted and behind bars, no one wants the case reopened. Ruiz's only hope of unraveling 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, Ruiz turns to Joe O'Loughlin, hoping that the psychologist can help unlock his memory. Step by step, the pieces come together, revealing a twisted trail of grief, vengeance, and the search for redemption.
A riveting thriller, Lost combines a fast-paced plot with searing insights into human psychology.