Not Rated for Some Sexuality/Nudity, Pervasive Language, Drug Use, Strong Bloody Violence.
Sylvia Sidney, Oscar Homolka, Desmond Tester, John Loder, Joyce Barbour, Matthew Boulton, S.J. Warmington, William Dewhurst, Austin Trevor, Torin Thatcher, Aubrey Mather, Peter Bull, Charles Hawtrey
A ring of saboteurs is causing havoc in London with a series of explosive terrorist attacks. Karl Verloc (Oscar Homolka) is part of the group, but he maintains a cover as a kind movie theater owner. His wife (Sylvia Sidney) is beginning to suspect something, though, and so is Scotland Yard Detective Sgt. Ted Spencer (John Loder). What neither of them know, however, is that Verloc uses his wife's little brother (Desmond Tester) to deliver the bombs in film canisters.
Gaumont Pictures, Film Effects Inc. [ca], Century Video, Criterion Collection, LS Video, Cine Art Pictures, Gaumont British Distributors