Access to the Children (1973)
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Overview
A married man forms a liaison with a woman he meets on a train, and is divorced by his wife who allows him access to their daughters on Sundays, which they usually spend at the zoo.
Play Trailer
A married man forms a liaison with a woman he meets on a train, and is divorced by his wife who allows him access to their daughters on Sundays, which they usually spend at the zoo.

BBC