A series of mysteries were produced in conjunction with short stories that ran in The Ladies' World magazine; this one is the sixth. Two fictional European nations, Retrograd and Galla, are discussing an alliance, and Gordon Bannock of the United States secret service (Francis X. Bushman) is sent to steal the documents. He's successful in obtaining them, and Retrograd sends Olga Petroff, their craftiest spy (Beverly Bayne), to retrieve them. She poses as the daughter of a peasant couple, who are shot by soldiers. Bannock finds Olga crying over the couple and, believing her to be alone in the world, offers to marry her. She agrees so that she can steal the papers and flee. Even though she has begun to fall in love with her husband she carries out her scheme. But when she returns to her superior, Sargall (Lester Cuneo), they find the papers are blank. Bannock still has the real papers, and he realizes that Olga will be in danger, so he interrupts their meeting. He forces Sargall to help them escape, and the couple departs for America. Bushman, one of cinema's first matinee idols, ruined his career by becoming involved with Bayne -- eventually it came out that he was already married and a father. This, and his adultery, were anathema to 1910s filmgoers.