Soviet intelligence officer Kraft has a new assignment. This time, acting under the name of engineer Grubbe, he must find and transfer to the center the secret drawings of a new submarine codenamed "Walter".

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Main Cast: Mikhail Golubovich, Olga Lysenko, Boris Kudryavtsev, Yuriy Dubrovin

Director: Yurii Lysenko

Writers: Yurii Lysenko, Zhorzh Zhuribeda

Editor: Yelyzaveta Rybak

Cinematographer: Naum Slutsky

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