Those theories crossed my mind as well, Timothy. The lack of blood on his clothes, even though he claimed to have scuffled with the killer, is such a damning piece of evidence. Maybe he had recently found out about the pregnancy and wanted out of the relationship therefore he hired someone else to commit the murder. I hope the police looked at all angles, but I think Sam was friends with those in high places, so maybe they overlooked it on purpose. We may never know. Thanks for sharing your theories!