Captain Charles Maddox returns secretly to London from an exile in disgrace only to be arrested, imprisoned and threatened with the death penalty. He is rescued by a shadowy government agency called the Map Room who give him a choice: return to prison or become an agent, codenamed Sterling, and help them uncover a government conspiracy connected to the Ripper murders. Led by the coolly calculating Milady and her associate Collier, and aided by fellow agent Church and mechanical...