'1914. Knight poses as rating aboard son's cruiser and helps Q-ship sink U-boat.' (British Film Catalogue)

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Main Cast: Estelle Brody, John Stuart, Alf Goddard, Humberston Wright, Gladys Hamer, George Thirwell, Maud Cressall, Vivian Baron, Wallace Bosco, Shayle Gardner

Director: W.P. Kellino

Writer: Austin Small

Editor:

Cinematographers: Gaetano di Ventimiglia, Basil Emmott

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