Serial killer Edgar Reese (Elias Koteas of The Prophecy, The Killing) is executed in the gas chamber. He's not exactly a normal person. In fact, he's really the demon Azazel, who can hop from one body to another, causing chaos and spreading evil wherever he goes. Before he's killed he tries jumping into the body of Detective John Hobbes (Denzel Washington), who had captured him--but can't because he's "a good man". So when Azazel goes into a different body he starts messing with the detective's partner, Jonesy (John Goodman) and woman, Gretta Milano (Embeth Davitz of Army of Darkness). This possession/demon movie is along the lines of The Hidden (1987), which was made a decade before. Recommended.