CONTENTSCHAPTERPAGEI.New Worlds to Conquer9II."Down with the Reds!"20III.Signed Up for Salvage31IV.On the Golden Trail42V.A Submarine Pickpocket54VI.Jay Fights for His Life66VII.Diamonds are Trump78VIII.Uncle Sam Calls90IX.Found—One U-Boat!102X.Caught with the Goods114XI.The Spy125XII.Introducing the "Jules Verne"137XIII.Diving De Luxe148XIV.An Unexpected Find159XV.Trapped in the Diving Bell170XVI.An Explosion Impends179XVII.A Dog to the Rescue191XVIII.Honors for Heroes202XIX.In the Pirates' Nest214XX.The Treasure Reclaimed227XXI.Back to Brighton239