A family was about to settle in for a quiet Christmas time night when suddenly there was a knock at the door. The high school band director, dressed as Santa, wanted to give them a gift. Terror ensued. Ronald "Gene" Simmons harbored the deepest, sickest secret a man could have - he fathered a child with his own biological daughter. What he did to her and the rest of his family is the worst family massacre in U.S. history. Check these stories out in today's Diamond State: Murder Board.