Detective Isaac Bell battles foreign spies, German U-boats, and an old nemesis to capture a secret technology that could alter the outcome of World War I in the latest adventure in the #1 New York Times bestselling series from Clive Cussler. As New England swelters in the summer of 1914, Detective Isaac Bell is asked to investigate the disappearance of a cache of rifles--only to discover something much more sinister. Whoever broke...