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The focus in this Mission: Impossible episode is on Cinnamon Carter, who has been captured behind the Iron Curtain. Chief interrogator Strom (John Vernon) discovers that Cinnamon suffers from a mortal terror of small, confined spaces, and uses this knowledge as a means of breaking her cover and exposing her fellow IMF agents. To rescue Cinnamon before she can reveal all, the IMF must arrange a prisoner exchange--which cannot take place until they kidnap a prisoner of their own. One of the best of the "character-centered" episodes, "The Exchange" was written by Laurence Heath, and first aired on January 5, 1969.