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The mellifluous Richard Haydn is cast as Malcolm the Magificent, a seedy travelling magician. To fool the yokels, Malcolm uses his twin daughters in his act: Jan (Alyce Andrece) is sweet and demure, while Janice (Rhae Andrece) is a pool-playing hellion. A comedy of errors ensues when Joe and Hoss Cartwright fall in love with the twins, but are convinced that they're rivals for the same girl. Originally aired on February 23, 1969, "The Lady and the Mountain Lion" was written by Larry Markes.