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The Hideous Sun Demon (1959)

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Ratings: 3.7/10 from 705 users  
Reviews: 29 user | 15 critic

After exposure to radiation, an atomic research scientist finds himself changing into a murderous, lizard-like creature every time he is exposed to sunlight.


(screenplay), (additional dialogue), 2 more credits »
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Title: The Hideous Sun Demon (1959)

The Hideous Sun Demon (1959) on IMDb 3.7/10

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Cast overview, first billed only:
Robert Clarke ...
Patricia Manning ...
Ann Russell
Nan Peterson ...
Trudy Osborne
Patrick Whyte ...
Dr. Frederick Buckell
Fred La Porta ...
Dr. Jacob Hoffman
Peter Similuk ...
George Messorio
William White ...
Police Lt. Peterson (as Bill Hampton)
Robert Garry ...
Dr. Stern
Donna King ...
Suzy's Mother
Xandra Conkling ...
Del Courtney ...
Radio Deejay
Richard Cassarino ...
Barfly / Man on Beach with Kids / Policeman (as Cass Richards)
Helen Joseph
Darryl Westbrook
Bill Currie


After exposure to radiation, an atomic research scientist finds himself changing into a murderous, lizard-like creature every time he is exposed to sunlight.

Add Full Plot | Add Synopsis


Thermodynamic horror from outer space! See more »


Horror | Sci-Fi


Unrated | See all certifications »




Release Date:

12 April 1962 (Mexico)  »

Also Known As:

Saurus  »

Box Office


$58,500 (estimated)

Company Credits

Production Co:

Show detailed on  »

Technical Specs


Sound Mix:

Aspect Ratio:

1.85 : 1
See  »

Did You Know?


Robert Clarke later helped spoof this movie when it was re-dubbed and re-released as What's Up, Hideous Sun Demon (1983) See more »


The barrel of the police officer's rubber prop gun visibly bends back and forth as he is chasing the Sun Demon on top of the gas tank. See more »


Dr. Frederick Buckell: Liquor and science don't mix well, apparently.
See more »


Featured in 42nd Street Forever, Volume 2: The Deuce (2006) See more »


Strange Pursuit
Sung by Marilyn King (as Marylyn King)
See more »

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User Reviews

Watch out for those darn radioactive isotopes!
17 December 2000 | by (NC) – See all my reviews

Robert Clarke wrote, directed, and starred in this film about a scientist that is exposed to a special radioactive isotope that makes him change into a lizard-like man everytime he is touched by the rays of the sun. Clarke is the scientist that has a drinking problem and an overactive libido as well. The film is VERY cheaply made, and most of the actors(okay, all of the actors) could have really benefited from a few acting lessons. The film nonetheless is very entertaining. There are some scenes which will make you laugh and cry( a higher level of laughter) because of their ineptitude and improbability. The scene where our evolution from fish and lizards being described is a gem, as are the two scenes where Clarke really goes overboard screaming "Why Me!" and the like. There are some well-shot scenes too. The ending is very nicely done, and the scenes with Clarke and a little girl have some poignant moments. The gal playing Trudy, a night club singer that Clarke dates in the middle of an evening trying to help him forget his plight no doubt, is Nan Peterson and a REAL knockout! Peterson shows more than ample cleavage to keep even the most hardened of critics entertained. All in all required film viewing for the aficionado of le bad cinema.

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