The Zeppelin's Passenger (1918)

Set against the backdrop of a German zeppelin, the narrative follows Malcolm Warren, a wealthy American businessman, who uncovers a sinister plot aimed at destroying the airship and its passengers. As he navigates a web of espionage, he encounters a captivating German spy, a mysterious Frenchman, and a clever British agent. The novel combines elements of mystery, romance, and action, delivering a fast-paced, suspenseful tale that keeps readers engaged. Oppenheim's skillful storytelling makes this classic thriller an exciting adventure for fans of the genre.