Heat Lightning (Virgil Flowers 2)

There's a body in Stillwater, two shots to the head. And the victim has a lemon in his mouth. Exactly like the body they found last week. The more Detective Flowers works the murders, the more convinced he is that someone's keeping a list - and that list could have a lot more names on it. If he could only find out what connects them all... But when he starts to piece the clues together, he discovers that this case leads down a lot more trails than he thought it did - and every one of them is booby-trapped.