Publisher's Synopsis
Last of 22 dating back to 1906. Ned and Bob kidnapped, bound, and gagged, Motor Boys Afloat, 1908, all three tied up, Motor Boys on the Atlantic, 1908. Only girls of series girlfriends Alice Vines, Mollie Horton, Helen Gale, minor characters, only with significant roles Jessica Hardack, light house keeper's niece lured away by gang taking place over to wreck, loot ship, while Boys tied up in storeroom, Motor Boys on the Atlantic, and Grace Sheldon, Bob's cousin, trapped with him and Boys on madman's submarine, The Motor Boys Under the Sea, 1914.
