E. Phillips Oppenheim'Äôs "The Great Secret" is a riveting exploration of intrigue and deception, characterized by its suspenseful narrative and intricately woven plot. Set against the backdrop of early 20th-century Europe, the novel encapsulates the era'Äôs themes of espionage and societal transformation. Oppenheim employs a sophisticated prose style laced with subtle irony and vivid characteriza...