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Mary goes to a singles bar to research a documentary, but on the night the crew arrives for filming, the same people who were willing to tell Mary everything don't want to be seen on camera.
First Air Date : Sep 19, 1970
Last Air date : Mar 19, 1977
Episode : 168 Episode
Season : 7 Season
Runtime: 25:14 minutes
Studio: CBS
Country: United States of America