The Valiant
Having placed mines on the hull of a British warship whilst it is safe in harbour during the second World War , the two man crew of an Italian miniature submarine are captured and held prisoner whist the crew try and discover the nature of their mission!
Directors: Roy Ward Baker
Writers: Franca Caprino, Giorgio Capitani, Keith Waterhouse, Robert Mallet, Willis Hall
Cast
IMDB: tt0056645