Detective Inspector Vincent Ruiz has no recollection of the firefight that landed him in the Thames, covered in his own blood and that of at least two other people. A photo of missing child Mickey Carlyle is found in his pocket-- but Carlyle's killer is already in jail. And Ruiz is the detective who put him there. Accused of faking amnesia, Ruiz turns to psychologist Joe O'Loughlin to help him unearth his memory and clear his name. As Ruiz's memories...

"On the evening following London's great fog of 1897, five men are lounging at the Grill, an exclusive gentleman's club. One, a visiting American diplomat, tells the others that while lost in the fog the night before, he stumbled upon the scene of a double murder! Scotland Yard, he relates, is baffled, but a second club member corroborates the diplomat's fantastic tale, confirming that the murder victims were a Russian princess and a young British...