The Summons (A Detective Peter Diamond Mystery)

Peter Diamond is unemployed and down-and-out, but his old CID department comes knocking when they need him. John Mountjoy, a murderer, has broken out of prison and taken a hostage -- and the only person he'll talk to is Diamond, who arrested him four years earlier. Unless Diamond can follow a very cold murder trail to find another killer and clear Mountjoy's name, another woman will die.