Blankety Blank Guest cast, played by Tessa Wyatt Episode 4x15: Show 15 (Dec 10, 1981) Episode 4x16: Show 16 (Dec 17, 1981) Episode 5x10: Show 10 (Nov 6, 1982) Episode 5x13: Show 13 (Nov 27, 1982) Episode 7x16: Show 16 (Jan 18, 1985)