CHICAGO (MCT) — Drew Peterson offered jurors his theory of how his third wife died, calling a pair of noted forensic pathologists Tuesday who testified that Kathleen Savio drowned in her bathtub after slipping and hitting her head.

Peterson’s attorneys brought in well-known forensic pathologist Dr. Vincent DiMaio, who has written several widely used pathology textbooks, and Dr. Jeffrey Jentzen, director of autopsy and forensic services at the University of Michigan’s medical school, to refute two state-paid expert pathologists who told jurors Savio’s 2004 death was a homicide.