In 'Passers-By' by E. Phillips Oppenheim, readers are taken on a thrilling journey through the world of espionage and international intrigue. Written in Oppenheim's signature suspenseful style, this novel is a testament to his skillful storytelling and keen attention to detail. Set against the backdrop of early twentieth-century Europe, the book captures the political tensions and shifting alliances of the time, making it a compelling read for history enthusiasts and mystery lovers alike. E. Phillips Oppenheim, known for his prolific output of over 100 novels, drew inspiration for 'Passers-By' from his own experiences as a successful British author with a fascination for spy fiction. His deep understanding of the genre and ability to create complex characters and plot twists shine through in this gripping tale of espionage and betrayal. I highly recommend 'Passers-By' to readers looking for a captivating and well-crafted spy thriller that will keep them on the edge of their seat. Oppenheim's expert storytelling and intricate plotting make this novel a must-read for anyone interested in the world of espionage and international politics.