 Before long, Deborah is back at the casino.The puppet that appears as Deborah, Duchess of Royston was based on actress Dame Edith Evans, known for her work on stage as well as in films such as "The Importance of Being Earnest" (1952).Evans also served as the inspiration for the character's voice, which was ultimately supplied by Ray Barrett when neither Christine Finn nor Sylvia Anderson were able to produce suitable tones during the episode's dialogue recording session.