The Great Secret - Edward Phillips Oppenheim

A pre-WWI thriller, ‘The Great Secret’ by E. Phillips Oppenheim follows the adventures of young Hardcross Courage. One night while staying at the Cosmopolitan Hotel he witnesses another man, Leslie Guest, fleeing capture from two attackers. Following his intervention, Hardcross finds himself unwittingly drawn into a world of international espionage. With plenty of danger, secrets, conspiracies, and a touch of romance - this is a classic spy novel from the Victorian author.