The Ropers S02E01 (The Party)

Helen complains about never getting to take a vacation. To keep her quiet, Stanley prepares a secret disco birthday party with the aid of his former tenants Jack Tripper, Janet Wood, and Chrissy Snow. This episode is sometimes included in Three's Company syndication as "Stanley, the Ladies' Man".
Guest Stars: Joyce DeWitt as Janet Wood, John Ritter as Jack Tripper, Suzanne Somers as Chrissy Snow.
(source)https://archive.org/details/the-ropers/The+Ropers+1979-1980+(Complete+TV+series+in+MP4+format)
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