Sách nói: Submarine Boys for the Flag

It certainly has been an odd day for our Submarine Boys! First Jack Benson is asked by a German Professor to speak with him a hotel, then a French Chevalier wants to speak to Eph Somers. Both foreigners want the same thing, for the Submarine Boys to come work for their respective countries. But, as we will find out, our boys are as patriotic as they come! (Ann Boulais)