JOLIET, Ill. – Drew Peterson showed nearly no emotion during his murder trial. Yet the once famously jocular ex-Illinois police officer screamed out his innocence before he was sentenced to 38 years in prison for his third wife's death. The outburst Thursday suggested reality may be settling in for Peterson, who for years casually dismissed suggestions he killed Kathleen Savio in 2004, or that he was behind the 2007 disappearance of his fourth wife, Stacy Peterson. Savio's death was initially ruled an accident. But after Stacy Peterson disappeared, authorities took another look and reclassified Savio's death as a homicide.