This mystery novel follows the story of Martin Hillyard, a British intelligence officer, who becomes embroiled in a complex web of espionage and intrigue. As he investigates a criminal conspiracy, he uncovers secrets that challenge both his personal and professional life. Set in the early 20th century, the novel blends elements of suspense, espionage, and romance, showcasing Mason's talent for crafting intricate plots filled with tension and adventure.

Alfred Edward Woodley Mason (1865-1948), who wrote as A.E.W. Mason, had a long and productive career. He wrote many novels and short stories, ranging from mysteries and courtroom thrillers to the classic adventure novel, THE FOUR FEATHERS.