Guest Stars Melissa Sue Anderson as Cathy Cummings Susan Howard as Cynthia Bowden Lorenzo Lamas as Brett Clark Mel Stewart as Charles, Isaac's Uncle Terry Moore as Mrs. Clark Troy Donahue as Mr. Clark Farley Granger as Charles Cummings Isabel Sanford as Tanya, Isaac's Aunt Joan Lorring as Mrs. Cummings Co Starring John Reilly as Bill Simmons Stan Sells as Gig Wayburn Don Bovingloh as Waiter