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.

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Main Cast: John Loder, Noel Madison, Belle Chrystall, Leonora Corbett, Jerry Verno, Davina Whitehouse, Eliot Makeham, Alexander Sarner, Melville Crawford, Nigel Barrie

Director: Redd Davis

Writer: E. Hayter Preston

Editor: Cecil H. Williamson

Cinematographer: Geoffrey Faithfull

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