The Invisible Maniac, a 1990 Italian-Spanish horror film directed by Bitto Albertini (under the pseudonym "Marco Ferreri"), is a low-budget, exploitation-style movie that revels in its own depravity and sleaze. The film tells the story of a deranged nurse, Luisa (played by Anita Ekberg), who becomes obsessed with her patients and descends into madness, leading to a series of graphic and unsettling crimes.

The Invisible Maniac occupies a specific niche within the horror genre, functioning as both a relic of late 1980s/early 1990s exploitation cinema and a grim reflection of societal anxieties about mental health, medical professionals, and violence against women. While tastes may vary, it remains a reprehensible, yet absorbing, exemplar of boundary-pushing B-movies.

After years of being a "VHS-only" rarity, the film received a 4K restoration from Vinegar Syndrome . Key Cast and Crew The Invisible Maniac (1990) - Full cast & crew - IMDb

Directed by Adam Rifkin (under the pseudonym "Rif Coogan"), the film follows Kevin Dornwinkle, a brilliant but socially outcast physics student. He invents an invisibility serum. However, unlike the tragic figure of Claude Rains, this maniac uses his powers not for espionage or regret, but for juvenile revenge and prurient interests. The tagline says it all: "He's naked, he's insane, and you're next."