19 user 37 critic

Thundercrack! (1975)

With a killer gorilla on the loose, a group of strangers find themselves stranded at a remote mansion of a grieving madwoman one dark and stormy night. They indulge in swapping bizarre personal backstories - and bodily fluids.


Curt McDowell


Mark Ellinger (story), George Kuchar (screenplay) | 1 more credit »


Cast overview, first billed only:
Marion Eaton ... Mrs. Gert Hammond
George Kuchar ... Bing / Medusa
Melinda McDowell ... Sash
Phillip Heffernan ... Chandler Wilson (as Mookie Blodgett)
Moira Benson Moira Benson ... Roo
Rick Johnson Rick Johnson ... Toydy McNeil
Maggie Pyle Maggie Pyle ... Willene Cassidy
Ken Scudder Ken Scudder ... Bond
Curt McDowell ... Medusa / Gerald Hammond (as Pamela Primate)
Bernie Boyle Bernie Boyle ... Señor Tostada
Mark Ellinger Mark Ellinger ... Charlie Hammond
Virginia Giritlian Virginia Giritlian ... Sarah Lou Phillips
Michelle Gross Michelle Gross ... Hula Hoop Girl (as Michele Gross)
Laurie Hendricks Laurie Hendricks ... Simon Cassidy's Mother
Billy Paradise Billy Paradise ... Mrs. Harlan


Take a clichéd Horror-story beginning, a remote Gothic mansion, an insane hostess, a group of strangers (four men, three women and a gorilla) and you pretty much begin to see that this is not meant to be a serious film, but rather a parody of several other (older and better) ones. Social and sexual confusion & misunderstanding guarantees that this odd cast of characters will come together and entertain & amuse. Written by Len Massaar

Plot Summary | Plot Synopsis


Ecstacy so great, that all Heaven and Hell become but one Shangri-La! See more »


Adult | Comedy | Horror


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Did You Know?


Renowned stage actress Marion Eaton decided to venture into the world of adult films after seeing Deep Throat (1972) and concluding she could act circles around Linda Lovelace. Ironically, a few weeks later she was asked to audition for Sip the Wine (1976) and she won the role, which put her in contact with producer and future costar Phillip Heffernan, who urged her to audition for Thundercrack. See more »


Early in the dialogue, it's established that Bond has a dodo bird tattooed on his thigh. He's later seen nude in extensive detail and sports no tattoos. See more »


Chandler: I was sort of edgy. But I'm not edgy anymore. Thanks to Sash.
Roo: No, of course not. She manages to take the sharp edge off everything, don't you, Sash?
See more »

Alternate Versions

The original version included the 1947 color cartoon/commercial "Chiquita Banana Tells a Fortune," but this was removed from all subsequent edits of the film. See more »


Spoofs The Old Dark House (1932) See more »


Bridal Chorus
Composed by Richard Wagner
Performed by Mark Ellinger
See more »

User Reviews

Whole lotta thunder. Whole lotta cracks.
8 January 2003 | by SanFernandoCurtSee all my reviews

It is uniquely impossible to comment on this film. It MUST be seen to be believed. Early on, when the guy jams his dick into a vacu-jack and cuts loose, you know you're in for a strange, strange ride. That scene could only be topped by the legendary "boinkin' the motorcycle" (yeah, right up the tail-pipe - but it's a Harley) sequence in Fred Halsted's "Sex Garage," another black-and-white gay porn West Coast masterpiece from the '70s. (Halsted, unfortunately, is also dead.) In "Thundercrack," McDowell takes the creaky "old dark house" motif and stands it on its head, its feet, its knees, buttocks... whatever. Every possible sexual combination is worked into the picture. I'm not the world's biggest fan of primate jack-off situations, but "Thundercrack!" has the best. A few weeks before his death in 1986, McDowell was feted at the Roxie Theater here in San Francisco for his contribution to American film and... well... San Francisco porn. Both industries have fallen on hard times. In Hollywood films, quality is practically nonexistent. San Francisco porn is nonexistent, period. We've come a long way from "Behind the Green Door" to "Burbank Sperm Bank." Ah, well. Everything changes. Everything ends.

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Release Date:

29 December 1975 (USA) See more »

Also Known As:

Раскаты грома! See more »

Filming Locations:

San Francisco, California, USA

Company Credits

Show more on IMDbPro »

Technical Specs


(original) | (theatrical)

Sound Mix:


Aspect Ratio:

1.33 : 1
See full technical specs »

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