A college student becomes lab assistant to a scientist who is working on a serum that can transform humans into snakes.


(screenplay), (story) (as Dan Striepeke)

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Cast overview, first billed only:
Dr. Carl Stoner
David Blake
Kristina Stoner (as Heather Menzies)
Richard B. Shull ...
Dr. Ken Daniels
Sheriff Dale Hardison
Kitty Stewart
Steve Randall
Ted Grossman ...
Deputy Morgan Bock
Charles Seel ...
Old Man
Ray Ballard ...
Waggish Tourist
Brendan Burns ...
Jock #1
Rick Beckner ...
Jock #2
Jim Drum ...
Hawker #1 (as James Drum)
Ed McCready ...
Hawker #2


David, a college student, is looking for a job. He is hired by Dr. Stoner as a lab assistant for his research and experiments on snakes. David also begins to fall for Stoner's young daughter, Kristina. However, the good doctor has secretly brewed up a serum that can transform any man into a King Cobra snake-and he plans to use it on David. Written by Anonymous

Plot Summary | Add Synopsis


Terror is ready to strike! See more »


Horror | Sci-Fi


PG | See all certifications »

Parents Guide:





Release Date:

July 1973 (USA)  »

Also Known As:

Hissssss  »

Box Office


$1,300,000 (estimated)

Company Credits

Show detailed on  »

Technical Specs


Sound Mix:

(Westrex Recording System)



Aspect Ratio:

1.85 : 1
See  »

Did You Know?


The library was a real herpetological library See more »


Kogen: You are a real and a bona fide genius. First one I ever met.
Dr. Carl Stoner: It's rare to be appreciated for one's failures.
See more »

Crazy Credits

A pre-title card opens the film declaring all the reptiles used in the film were real and states "We wish to thank the cast and crew for their courageous efforts while being exposed to extremely hazardous conditions." See more »


Referenced in Frightmare (1983) See more »

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User Reviews

Cobras, Mambas, and snake boys...Hmmmmm
25 November 1999 | by (NC) – See all my reviews

What we have here is a failure to....OH, wrong Strother Martin film. Well, Martin is the star of Sssssss(7 s's), and I must admit he is rather enjoyable to watch as a kindly, softspoken, insane, murderous herpetologist trying to save the human race by turning men into cobras. The story is absurd and rather difficult to follow. The special effects suck(being blunt and candid) as we see Dirk Benedict get an occasional scale on his green body. The snakes are impressive, however. Martin's over-the-top performance saves this film from being utterly mundane and makes it fun to watch.

5 of 8 people found this review helpful.  Was this review helpful to you?

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