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