"Even on holiday in Italy, trouble and Slade McGinty were never far apart, and when he met the young blonde who appealed to him for aid he wondered if he was about to be taken for a ride. The idea amused him faintly; but not for long. Slade knew too much about the sinister talent of espionage agents for he had been one himself. Then his old friend, Emile Leronde of the French service Central contacted him with the startling information that secret documents had been stolen in Paris. When they pooled their information he found they were working in a tortuous maze of deadly chance."