Kiss It Goodbye — John Wessel

When Alison's former lover is found murdered in a small lake town near Chicago, she and Harding shrug it off as an incidental tragedy. But the discovery of a suspect -- the runaway fiancé of Alison's best friend, Beth -- drunk and disoriented, in the very town where the body was found, seems more than coincidental. Harding can't shake the suspicion that Alison may know more than she's letting on. Harding's own brushes with the law have left him without a legitimate private investigator's license, but his fear that Alison may be in danger just as quickly ensures he's back in the game, implementing his unauthorized services -- a scenario that proves dangerous at best, impossible at worst.
As the body count rises and the cadavers get closer and closer to home, the noose around Alison's past draws tight, and the stakes grow intensely personal for Harding. Even as he unearths a past for Alison he'd rather not see unburied, he knows he must beat back his jealousy and suspicions about his longtime lover in order to find a ruthless killer -- before the killer finds Alison.