When a man is found on a beach, drifting in and out of consciousness, with no identification and unable to speak, interest in him is sparked immediately. From the hospital staff who find themselves inexplicably drawn to him; to international medical experts who are baffled by him; to the national press who call him Mr Nobody; everyone wants answers.  Who is this man? And what happened to him? The new thriller from the bestselling author of "Something in the Water".