When a murder victim is discovered in the murky waters of the River Thames, Erskine Powell of Scotland Yard plunges into the most diabolical case of his distinguished career. A second brutal slaying draws Powell even deeper into a tangled web of greed, deception, and blackmail. From Tower Bridge to Soho, from Mayfair to Bloomsbury, Powell throws a dragnet across London, racing against time to link two savage crimes -- and stop a cold-blooded killer dead in his tracks.