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Bob wins a dozen rolls of free film, and takes to photography with a zeal that drives Margaret to distraction. When Margaret learns that Step Lively Digest is doing a profile on her, she actively tries to discourage Bob from taking her photograph for the magazine. While on their way to dinner, Margaret picks up Bob's latest roll of film -- or so she thinks; the clerk mixes up her film with that of Alice, another customer, as they later discover when Bob finds pictures of Alice and a man having sex. They try to return the photos without letting on that they've seen them, and Alice invites them over to dinner with some other friends. When they arrive, Bob and Margaret discover that Alice and the man in the photo are married -- but not to each other. (Originally aired July 11, 2001.)