Retiring at the end of CITY OF BONES, Detective Harry Bosch was looking for a rest. But some months later, Harry needs something to occupy his time, and another retired detective has just the thing--an unsolved case that touched both their lives. Haunted by the memory, Harry decides to take up the investigation. As he follows cold leads and blind alleys, the case begins to open up, and it starts to look as though Angella Bentons death may have been related to a massive robbery. The trouble is that the investigation seems to be irritating the FBI, who are conducting their own case--for their own reasons....