An invisible scientist escapes from an asylum and teaches high-school physics to nubile teens.


Adam Rifkin (as Rif Coogan)


Matt Devlen (story), Tony Markes (story) (as Anthony Markes) | 2 more credits »





Cast overview, first billed only:
Noel Peters Noel Peters ... Kevin Dornwinkle
Savannah ... Vicky (as Shannon Wilsey)
Stephanie Blake ... Mrs. Cello (as Stella Blalack)
Melissa Moore ... Bunny
Clement von Franckenstein ... Dr. McWaters
Claudette Rains Claudette Rains
Jason Logan Jason Logan ... Henry
Robert R. Ross Jr. Robert R. Ross Jr. ... Chet
Rod Sweitzer ... Gordon
Eric Champnella ... Bubba
Kalei Shallabarger Kalei Shallabarger ... Joan
Gail Lyon Gail Lyon ... April
Debra Lamb ... Betty
Marilyn Adams Marilyn Adams ... Mrs. Dorwinkle
Dana Bentley Dana Bentley ... Newscaster


A budding young scientist lad is caught by his mom checking out the lady across the way with his telescope, whereupon she lectures him on the evils of women. Twenty years later and all grown up, the scientist announces his theories of invisibility, and his colleagues laugh, to which he responds by killing four of them. He escapes from the loony bin and gets a job teaching summer school physics at a high school. The students decide to tease him about the same time as he perfects his invisible juice, and he goes on a spree of vengeance. Written by Ed Sutton <>

Plot Summary | Add Synopsis


The new physics professor has a disappearing act that's a real scream.


Comedy | Horror | Sci-Fi


R | See all certifications »

Did You Know?


Melissa Moore (Bunny), Shannon Wilsey (Vicky), and Dana Bentley (Newscaster) all appeared in Sorority House Massacre II (1990). See more »


Dornwinkle (the Invisible Maniac) tosses a radio into the water on the shower room floor, electrocuting one of the girls as she's taking a shower. A few scenes later, the same radio (the masking tape on the speaker gives it away) is on a table in the cafeteria, playing tunes as two students eat lunch. See more »


Mrs. Cello: If you want to go to college, all you have to do is make me feel like a woman.
See more »

Crazy Credits

The fire marshall is listed in the credits as "Highest paid guy on the set." See more »


Referenced in Rewind This! (2013) See more »


How Long
Written by Kent Richards (aka K. Ormiston) and Tymm Rocco
Performed by Kent Richards, Tymm Rocco and Bobby Gabriele
Published by LA Musicworks ASCAP
See more »

User Reviews

The Invisible Maniac has a respectable enough story, in the tradition of the Nutty Professor, but it makes up for the bad acting and directing by throwing in numbing amounts of gratuitous nudity.
13 September 2000 | by Anonymous_MaxineSee all my reviews

Take one look at the cover of this movie, and you know right away that you are not about to watch a landmark film. This is cheese filmmaking in every respect, but it does have its moments. Despite the look of utter trash that the movie gives, the story is actually interesting at some points, although it is undeniably pulled along mainly by the cheerleading squads' shower scenes and sex scenes with numerous personality-free boyfriends. The acting is awful and the director did little more than point and shoot, which is why the extensive amount of nudity was needed to keep the audience's attention.

In The Nutty Professor, a hopelessly geeky professor discovers a potion that can turn him into a cool and stylish womanizer, whereas in The Invisible Maniac, a mentally damaged professor discovers a potion that can make him invisible, allowing him to spy on (and kill, for some reason) his students. Boring fodder. Don't expect any kind of mental stimulation from this, and prepare yourself for shrill and enormously overdone maniacal laughter which gets real annoying real quick...

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Release Date:

13 July 1990 (USA) See more »

Also Known As:

The Invisible Sex Maniac See more »

Filming Locations:

Los Angeles, California, USA

Company Credits

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Technical Specs


Sound Mix:



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