Take one daring step beyond the threshold of your own imagination.

Vincent Price stars in this early '60s adaptation of Thomas De Quincey's thriller about an opium addict trying to solve a mystery in San Francisco's Chinatown.

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Main Cast: Vincent Price, Linda Ho, Richard Loo, June Kyoto Lu, Philip Ahn, Yvonne Moray, Caroline Kido, Terence de Marney, John Fujioka, Angelo Rossitto

Director: Albert Zugsmith

Writers: Thomas De Quincey, Robert Hill

Editors: Robert S. Eisen, Roy V. Livingston, Edward Curtiss

Cinematographer: Joseph F. Biroc

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