John Loder and Elliot Makeham star in Redd Davis’s British topical crime thriller. Professor Grayson is working on an anti-gas experiment and Dr. Klee, whose quiet advertising covers other welfares, means to find it.
Capt. Rufus Grant
Dr. Klee
Nora Grayson
Herlaine Frank
Hugo Guppy
Polly
Professor Grayson
Mr. Vander
Pete Voss
Colonel Lockwood
Monsieur Buckner
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