'Big treat in store for fans. And if you're not a fan yet, why not?' Val McDermid

'William Shaw is one of the great rising talents of UK crime fiction' Peter James

London 1969: A detective in love. A crime of passion

The devil: She made a profit from rich men. They paid for her youth. She paid with her life.

The angel: To investigate the prostitute's murder, DS Cathal Breen isn't scared to question powerful suspects.

The fall: But when a mysterious man from MI6 calls, Breen begins to fear he's uncovered a spy scandal.

And then Breen's girlfriend Helen Tozer, with her ex-copper instincts, gets dangerously involved. Right or wrong, Breen knows he has too much to lose. He can have no sympathy for the devil.