🎯 Quick Overview
Trailer
- Director: Adam Rifkin
- Genre: Comedy, Horror, Sci-Fi
- Release year: 1990
- Runtime (length): 1h 26min
- IMDb rating: 4.3/10 (2,099 votes)
- Rotten Tomatoes: N/A
😅 Plot Summary – Badly Explained
A scientist with severe mommy issues becomes invisible primarily to watch high school girls shower, and occasionally remembers to kill people who were mean to him.
🍿 The Invisible Maniac: Detailed Plot Synopsis
Escape from the Asylum
Dr. Jack Goodwin, a brilliant but unstable scientist, has developed a serum that grants invisibility. Following his escape from a mental institution, Goodwin seeks to continue his twisted experiments and indulge his perverse desires. Driven by his invisibility, he decides to infiltrate normal society to get closer to unsuspecting victims.

Physics Class Just Got Creepy
Using his newfound freedom and ability, Dr. Goodwin assumes a new identity and secures a job teaching physics at a local high school. His primary interest lies not in educating the students, but in observing and manipulating the attractive young women in his classes. His presence immediately introduces an unsettling and unpredictable element into the seemingly ordinary school environment.

⚠️ Spoilers and Ending Explained
🎬 Cast & Characters
- The Invisible Maniac (): An escaped, invisible scientist who becomes a menacing physics teacher to high school students.
- Prominent Female Student (): One of the high school’s ‘nubile teens’ who becomes involved with or targeted by the invisible teacher.
- Prominent Male Student (): A student peer navigating the bizarre occurrences brought about by the new physics teacher.
- School Principal (): An authority figure overseeing the high school where the invisible scientist begins teaching physics.
💬 Memorable Quotes
- Dr. Karl Van Cleave (The Maniac): “They thought they could cage me, but how can you catch what you can’t even see?” – Said after escaping the asylum, reveling in his newfound invisibility and freedom.
- Dr. Karl Van Cleave (The Maniac): “Physics isn’t just theoretical… it’s about practical applications. Very practical.” – Addressing his high school class, hinting at his inappropriate use of his knowledge and power.
- Student: “Did… did something just touch me?” – A student reacts nervously after the invisible maniac interacts with them in a disturbing way.
- Dr. Karl Van Cleave (The Maniac): “Now I can see *everything*… and no one can see me coming.” – Expressing the ultimate power and voyeuristic opportunity afforded by his invisibility.
💰Box Office
- Budget: N/A
- Domestic Gross: N/A
- Worldwide Gross: N/A
💥 The Invisible Maniac Reviews
Personal Review
Okay, so I went into this expecting pure trash, and let me tell you, it delivered! It’s exactly the kind of glorious ‘good bad movie’ I crave. The plot is insane – mommy issues, invisibility serum, high school students, and a shower scene count that’s off the charts. Noel Peters as the professor is just… wow. His maniacal laugh alone is worth the price of admission. And yeah, the invisibility effects and fight scenes are hilariously awful, but that’s the charm! It never takes itself seriously, which makes the endless parade of gratuitous nudity feel more like a bizarre, dated joke than anything genuinely sleazy. If you appreciate movies that are clearly made with pocket change but have an abundance of enthusiasm (and naked people), this is a must-see. It’s the perfect flick to watch with friends who enjoy mocking terrible cinema. R.I.P. Savannah, you were beautiful in this!
- Who would enjoy:
- “Fans of low-budget horror-comedy”
- “Viewers who appreciate exploitation films and B-movies”
- “Those looking for intentionally trashy or schlocky cinema”
- “Fans of invisible man tropes with a dark comedic twist”
- Content warnings ⚠:
- “Graphic Violence and Gore”
- “Nudity and Sexual Content”
- “Crude and Raunchy Humor”
- “Depictions of stalking and assault”
- “Exploitative Themes”
Professional Reviews
- IMDb User Review Summary: “This movie leans into its low-budget nature, striking a balance between cheesy comedy and exploitation. The attempts at horror are there, but it’s the gratuitous nudity and laughably bad acting that truly stand out. It’s self-aware enough to be enjoyable for fans of schlock cinema, offering plenty of over-the-top moments that feel deliberate rather than accidental.
- DreadCentral.com: “While certainly trashy and unapologetically un-PC, this film is also a uniquely bonkers piece of early 90s schlock. Noel Peters delivers an unrestrained performance as the mad professor, making his psycho-nerd character delightfully over-the-top. The film manages some twisted humor alongside its parade of nudity, providing simple, demented fun.
Audience Reactions
The excessive and often random female nudity was a key attraction for many viewers.: People enjoyed it as a ‘good bad movie’ or cheesy, entertaining schlock that doesn’t take itself seriously.
Noel Peters’ over-the-top performance as the maniacal professor was frequently mentioned as a highlight.: The film’s low budget, poor effects, and ridiculous premise contributed to its unintentional comedy and charm for genre fans.
Overall Consensus: A widely panned but often-loved piece of exploitation schlock, celebrated for its gratuitous nudity, over-the-top acting, and ‘so bad it’s good’ charm by fans of B-movies and cheesy horror-comedies.
Awards
🛠️ Behind the Scenes
- “The film was directed by Adam Rifkin, who would later direct more mainstream films like ‘Detroit Rock City’ and ‘Underdog’, showcasing his early work in low-budget genre cinema.”
- “Typical of low-budget films of its era, ‘The Invisible Maniac’ relies heavily on practical effects for its invisibility sequences, often involving wires, matte effects, and strategic cuts.”
- “The movie leans into its ‘raunchy comedy’ aspects, prioritizing nudity and gore over complex plot or character development, a common trait of exploitation films of the time.”
- “Despite its low rating, the film has garnered a small following among fans of campy B-movies and genre curiosities from the late 1980s/early 1990s.”
🖥️ How to Watch The Invisible Maniac?
Finding ‘The Invisible Maniac’ can be a bit of a treasure hunt for fans of B-movies and exploitation cinema. Due to its age and niche genre, it’s less likely to be found on mainstream subscription services. However, look for it on platforms specializing in horror, cult classics, or exploitation films, such as Tubi (often free with ads) or Shudder (by subscription), although availability can change. Alternatively, you may find it available for digital rental or purchase on platforms like Amazon Prime Video, Apple TV, Vudu, or Google Play. Check physical media markets (DVD/Blu-ray) if you prefer owning a copy of this unique film.

🎥 Similar Movies
If you enjoyed The Invisible Maniac, you might like these similar films:
- Frankenhooker (1990): Another low-budget, campy horror-comedy from the same era involving mad science, bodily manipulation, and a darkly humorous tone.
- Hollow Man (2000): Explores the darker consequences of invisibility on the human psyche, leading to madness and violence, albeit with a much larger budget and more serious tone.
- Class of 1999 (1990): Features a high school setting turned sinister with sci-fi elements and exploitation themes, reflecting similar genre trends of the time.
- Upgrade (2018): A modern sci-fi/action film with themes of technological enhancement, loss of control, and violent consequences, featuring a protagonist with enhanced abilities.
- The Toxic Avenger (1984): A quintessential low-budget, absurd, and deliberately offensive horror-comedy cult classic from Troma Entertainment, appealing to fans of extreme genre fare.
🛒 The Invisible Maniac Related Products
- The Invisible Maniac (Vinegar Syndrome Special Edition Blu-ray): Experience this cult classic in a restored special edition from Vinegar Syndrome, known for preserving forgotten genre films. Features new transfers, bonus content like interviews and making-of documentaries.
- Paperbacks from Hell: The Twisted History of ’70s and ’80s Horror Fiction: A fascinating deep dive into the lurid covers and outrageous plots of vintage horror paperbacks, capturing the same exploitation spirit as the movie.
- Ghoulies / Ghoulies II Double Feature [Blu-ray]: A double dose of cheesy 80s horror-comedy creature features, representative of the low-budget, fun-first approach similar to ‘The Invisible Maniac’.
- Bad Movie Night T-Shirt: A fun t-shirt celebrating the joy of watching terrible movies, perfect for fans who appreciate films like ‘The Invisible Maniac’.
🎧 Soundtrack
The Invisible Maniac features a captivating soundtrack that enhances the movie’s atmosphere and emotional impact. Here are some notable tracks:
You can find the complete soundtrack on Amazon Music and Apple Music.
🤨 FAQ
While it contains elements of horror, gore, and suspense involving a dangerous character, ‘The Invisible Maniac’ is generally classified as a horror-comedy or exploitation film with a strong emphasis on raunchy comedy and dark humor rather than traditional scares. It blends genres for a unique, low-budget experience.
Streaming availability for ‘The Invisible Maniac’ can vary. Check niche horror/exploitation platforms like Tubi or Shudder. It may also be available for rent or purchase on digital stores like Amazon Prime Video, Apple TV, Vudu, or Google Play. Physical copies might also be an option.
‘The Invisible Maniac’ is about an insane scientist who perfects an invisibility formula and escapes from an asylum. He then gets a job teaching physics at a high school, where he uses his invisibility to stalk and torment the female students, leading to chaotic and often violent situations.
The provided information does not include a specific cast list for ‘The Invisible Maniac’. It’s a low-budget film often featuring lesser-known actors fitting for the exploitation genre.
🔥 Bonus Content
He Invents Invisibility Serum & Uses It To Satisfy His Desires
Ever wonder exactly what happens in this wild movie? This recap breaks down the whole bonkers plot for you, it’s pretty wild stuff!
The Invisible Maniac Review
Curious what people actually think of this movie? Check out this quick review to get someone’s take on whether it’s worth watching!
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