Tropic of stupid
(Large Print)

"Devoted Floridaphile Serge Storms is a lover of history, so he's decided to investigate his own using one of those DNA services from late-night TV. Excited to construct a family tree, he and Coleman hit the road to meet his kin. Serge is thrilled to discover he may be related to a notorious serial killer who's terrorized the state for twenty years and never been caught. Which one of his newfound relatives will be the one to help him hunt down this deranged maniac? Serge doesn't know that a dogged investigator from the Florida Department of Law Enforcement is also hot on the trail. Then Serge meets a park ranger who's also longing to make a family reconnection. But all is not as it appears on the surface, and Serge's newfound friendship in the mysterious swamps of Florida may lead to deadly results. Finding his own relatives has made Serge understand the importance of family. Of course he'll do anything to help." --,(Source of summary not specified)