Is evil alive…? Dr Jerry Halpern is trying to find out, studying for his PhD on the subject. Dexter Morgan, meanwhile, has a few wicked things of his own to contend with – not least, planning his wedding to Rita to complete his nice-guy disguise. But when a student of Halpern's is found burnt, molested and headless – seemingly sacrificed to an ancient god – and Dex is brought in as forensic ana...