There could also be the body of a woman he just stabbed to death in a bedroom in the home and that's why he didn't want the police coming in. Threads like this with the ensuing speculation accomplish absolutely nothing positive for anyone unless they have an agenda of some sort.
ETA: We just heard of the Cleveland kidnapper case. Everyone's pissin' and moanin' about that, too, because the cops were called to the area a couple of times in the past and didn't find anything to act on. FFS...