>> he said, no, he said, "it's too clean. " to him it wasn't anything that would've been helpful to the investigation. >> kind of an assumption there, huh? >> well, i guess i would -- that's what you could call it. >> what's the old expression? to assume makes an ass of you -- >> it makes both -- >> -- and me. >> yeah, exactly. so, with zero physical evidence to point to anyone, the case of the murder in the bathtub went cold. until? until six months later, a particular friend, once suddenly gone, just as suddenly reappeared. time for a pertinent question or two. >> coming up -- billy lee back from alaska admitting he and cassy were close. >> we were real good friends. >> but what will he say to this? >> did you inflict any injuries to the victim on march 24th?