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Lost (original 2005; edition 2007)
Amazon.com Product Description (ISBN 0307275485, Paperback)Detective Inspector Vincent Ruiz can’t remember how he got to the hospital. He was found floating in the Thames with a gunshot wound in his leg and a picture of missing child Mickey Carlyle in his pocket. But Mickey’s killer is already in jail. Add to this the blood stained boat found near where Ruiz was pulled from the water, and the pieces just don’t add up. Now, accused of faking amnesia and under investigation, Ruiz reaches out to psychologist Joseph O’Loughlin to help him unlock his memory, clear his name, and solve this ominous puzzle. Michael Robotham is one of the finest new thriller writers working today. Marked by vivid characters and full of unexpected turns, Lost is a hair-raising journey of vengeance, grief, and redemption through the dark London underworld.
(retrieved from Amazon Mon, 30 Sep 2013 13:48:45 -0400)
Detective Vincent Ruiz is rescued from the Thames. A bullet is in his leg, and a photo of a missing girl is in his pocket. Ruiz has no memory of what happened to him.
(summary from another edition)