In December 2006, Michael Ratley carried his baby and his wife, Effie, from their burning home in Florida. A teary-eyed Ratley said love drove him to save them. A month later, Effie was dead, bludgeoned with a hammer. The man hailed as a hero for saving her was convicted of murdering her. This week a jury said he should spend the rest of his life in prison for the crime. What turned a heroic husband into a hammer-wielding wife killer?