"Sheila Bellush, a wife and mother of six children including quadruplets, was found murdered in her Sarasota home in 1997. The murderer was so cold-blooded that he shot and stabbed Bellush in front of her quadruplets who were then just toddlers. As far as investigators could tell, there was no motive and nothing was stolen. ... During our investigation 48 Hours revealed evidence that had not made it into the public accounts - investigators knew of the evidence but Allen Blackthorne (Bellush's ex-husband) didn't until 48 Hours confronted him with it on camera. ... Blackthorne was found guilty of Sheila Bellush's murder and sentenced to life in prison."