After a lock-keeper entrusts his daughter to a canal Casanova, he is shocked to learn that she is pregnant. He then refuses to open his locks - causing barges to pile up in every direction until the guilty party confesses.

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Main Cast: Harry H. Corbett, Hugh Griffith, Eric Sykes, Ronnie Barker, Julia Foster, Miriam Karlin, Eric Barker, Derek Nimmo, Norman Bird, Richard Briers

Director: Duncan Wood

Writers: Alan Simpson, Ray Galton

Editor:

Cinematographer:

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