Depth charge

By M. Zachary Sherman

Subjects: World War (1939-1945) fast (OCoLC)fst01180924, World war, 1939-1945, fiction, Spies, Enigma cipher system, Spies, fiction, World War, 1939-1945, United States, Fiction, Children's fiction, Ciphers, Juvenile fiction, War stories, United states, fiction, Spy stories, United States. Office of Strategic Services

Description: Lieutenant Aaron Donovan of the Office of Strategic Services embarks on a dangerous mission to get aboard a damaged German submarine and obtain the newest codebooks for the German Enigma cipher machine--will the mission be successful or end in disaster?