

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!
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Cast

John Mills
Captain Morgan

Ettore Manni
Luigi Durand de la Penne

Roberto Risso
Emilio Bianchi

Robert Shaw
Lieutenant Field

Liam Redmond
Surgeon Commander Reilly

Dinsdale Landen
Norris

John Meillon
Bedford

Patrick Barr
Rev. Ellis

Moray Watson
Capt. Turnbull

Gordon Rollings
Payne

Laurence Naismith
Admiral

Leonardo Cortese
Italian Commander
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