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John Nesbitt
Narrator (voice)
Ernie Alexander
Billiard Ball Tester (uncredited)
Margaret Bert
Arachnophobic Woman (uncredited)
Edward McWade
Roger Moore
Doctor (uncredited)
Tom Quinn
Laboratory Man (uncredited)
Bert Stevens
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Released
Metro-Goldwyn-Mayer
Jack Smith
Director of Photography
Harry Poppe Jr.
Screenplay
Paul Youngblood
Art Direction
Edward Bock
