In this eerie, fast-paced pulp novella, a man recovering from addiction becomes entangled in a sinister global conspiracy led by the mysterious and terrifying master criminal known only as Skull-Face. Dwelling beneath London's shadows, this ancient-looking figure commands a secret network of outcasts, revolutionaries, and enslaved minds, all working toward a catastrophic upheaval of civilization. As the protagonist is drawn deeper into the underworld, he must confront both the dark mastermind and his own inner demons.