My Pal the Bug #3: Bait — Greg M. Hall

Turlock and Marve go to Tramin, a Podunk town, to let things cool off for a while. They stumble across the perfect assassin. Worse yet, Turlock gets a text informing him he'll be killed in five minutes.If he can survive, he and Marve must find out where the killer came from--and what it will take to keep more of them from being produced.