Henry: Portrait of a Serial Killer (1986) stands as one of the most unsettling and uncompromising films ever made about a murderer's psyche. Directed by John McNaughton, this low-budget masterpiece presents a chillingly matter-of-fact portrayal of Henry Lee Lucas, a real-life serial killer who claimed hundreds of victims. The film follows Henry as he arrives in Chicago and moves in with ex-con acquaintance Otis, gradually schooling him in the methods and mindset of serial murder.

Michael Rooker delivers a career-defining performance as Henry, creating a character who is both terrifyingly ordinary and profoundly disturbing in his detachment from humanity. His chemistry with Tom Towles as the increasingly corrupted Otis creates a dynamic that explores how violence can be taught and normalized. The film's documentary-style approach, grainy cinematography, and refusal to sensationalize the violence make it all the more harrowing.

What makes Henry: Portrait of a Serial Killer essential viewing is its unflinching examination of evil's banality. Unlike glamorized Hollywood serial killer films, this movie presents murder as ugly, random, and devoid of meaning. The film's controversial home invasion scene remains one of cinema's most disturbing sequences precisely because of its raw, unadorned presentation. Viewers should watch this film not for entertainment, but for its powerful commentary on violence in American society and its groundbreaking approach to true crime storytelling. The film's impact on the horror and crime genres continues to be felt decades later.