Having written a book on bridge, Emma is invited to the country home of a fellow bridge enthusiast. It soons becomes painfully obvious that Emma has been lured into a trap, instigated by someone who has a major grudge against her. Brian Clemens' teleplay includes echoes of such earlier episodes as "Don't Look Behind You" and "The House That Jack Built." First telecast in England on April 29, 1967, "The Joker" made its American TV debut 13 days later. ~ Hal Erickson, Rovi