Dahmer is a 2002 American biopic horror film about the American serial killer Jeffrey Dahmer. Jeremy Renner stars in the title role. There are two timelines in the film: The "present" of the film runs in ordinary chronological order covering the period of one-to-two days; the flashbacks go in reverse order, so that Dahmer is seen as successively younger until the film arrives at his first murder and its aftermath.

Plot

During his murder spree, Jeffrey Dahmer (Jeremy Renner) conducts experiments on his victims before he murders them, trying to create a living zombie. He killed one man this way in Bath, Ohio, and sixteen men in the metropolitan area of Milwaukee, Wisconsin. At the same time, he rationalizes his crimes with the divorce of his parents and his emotionally isolated childhood; nevertheless, he can't stop inviting more and more young men from bars and clubs to his home, where he kills them. Jeffrey meets a young man named Rodney and invites him to his house with plans of murdering him, but as the night goes on and the conversations get more personal Jeffrey is faced with a dilemma.