The team goes after an active serial killer who's already taken the lives of three married women. When a fourth is later found, the DNA matches that of a man who was imprisoned for a murder eight years earlier. It turns out that the killer had received a bone marrow transplant from the man and that as a result of the transplant, the killer's semen is identical to the man's own semen. ' He has started killing again after being injured in an accident at work.
—durrant4145@rogers.com