'Peter Ruff and the Double Four' is a novel that follows Peter Ruff, who in the midst of danger, decides to transform from a criminal to a private investigator with the help of his underworld connections and mastery of disguise. Teamed up with his assistant, Violet Brown, Ruff becomes a successful sleuth, even gaining the admiration of a conglomerate of reformed criminals. However, Ruff's success attracts enemies, including a former flame's new husband and a German spy. In a collection of thrilling short stories, readers will follow Ruff's adventures as he outwits his foes and possibly falls in love.