Henry: Portrait of a Serial Killer (1986) remains one of the most unsettling and influential independent horror films ever made. Loosely based on the confessions of real-life serial killer Henry Lee Lucas, the film follows Henry (Michael Rooker) as he arrives in Chicago and moves in with his ex-con acquaintance Otis (Tom Towles). What begins as a tense domestic arrangement quickly descends into a masterclass in psychological terror as Henry begins schooling the impressionable Otis in his brutal, nihilistic methods of murder.

The film's power lies in its stark, documentary-like realism. Director John McNaughton employs a grim, unflinching visual style that refuses to glamorize or sensationalize the violence. Instead, it presents Henry's crimes with a chilling matter-of-factness that is far more disturbing than any Hollywood slasher. Michael Rooker delivers a career-defining performance, embodying Henry with a terrifying blend of cold detachment and simmering menace. His chemistry with Tom Towles's weak-willed Otis creates a dynamic that is both fascinating and horrifying to witness.

Viewers should watch Henry: Portrait of a Serial Killer not for cheap thrills, but for its raw, uncompromising examination of evil. It's a film that gets under your skin and stays there, a bleak character study that questions the nature of violence and the banality of monstrosity. Its low-budget aesthetic and gritty realism have cemented its status as a cult classic and a benchmark for psychological horror. This is essential viewing for fans of crime dramas and horror that prioritizes psychological dread over graphic spectacle.