Ep 4. Deadly Delivery

It looks like a simple robbery gone horribly wrong when Donald and Marsha Levine are found dead inside their Munster, Indiana Mansion. But why then did the "robbers" leave the Levine's only son, Mark, alive? And why was Mark blaming the murder on his shady Uncle Robert? There are skeletons in most family's closets, but investigators soon discover that the Levine's are harboring a whole graveyard full in theirs.