When Paul Ennis sees his wife Ruth mysteriously abducted in London, he turns in desperation to Inspector Pierce Campbell, a hard-eyed detective who suspects the kidnapping is tied to the Brotherhood of the Door, a secretive cult feared for its annual vanishings, occult rites, and hints of a passage beyond the known world. What begins as a grim case of missing persons quickly opens into a nightmare of supernatural dread, criminal conspiracy, and a Door that may lead to another universe. Following the trail to a smoky waterfront café in the East India Docks, Campbell and Ennis go undercover, only to be trapped in Chandra Dass's hidden lair and sentenced to a terrible fate. They survive a near-execution, then launch a desperate chase by river and sea as Ruth is carried farther from reach. A brutal ambush by armed Malays, a storm-lashed pursuit, and clues from jeweled badges lead them at last to a hidden harbor beneath a cliff, where Campbell prepares one last deception: posing as Brotherhood members to penetrate the cult's secret stronghold and save Ruth before the Door is opened. This edition has been fully restored with modern typesetting, custom cover design.