With access to hundreds of pages of police and FBI interview transcripts and personal testimony from family, friends, and survivors, the haunting story of how Jeffrey Dahmer went from shy adolescent to a notorious serial killer and cannibal is revealed.

Testimonials, police archives and interviews with relatives and survivors reveal a haunting personality and the path that led Jeffrey Dahmer to become a gruesome serial killer.

During the 1970s and 1980s, Jeffrey Dahmer took the lives of at least seventeen young men with great cruelty and devoured parts of their bodies. The second part of the documentary discusses the killer's modus operandi.