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X-rays of a car crash victim reveal that the man had a stomach full of valuable diamonds. Naturally, Steed and Emma are called in to investigate. They follow clues all the way to the prestigious Litoff Organization, a group of financiers with an agenda all their own. First telecast in England on October 14, 1967, "The 50,000 Pound Breakfast" was a remake of the 1962 episode "Death of a Great Dane." Both were written by Roger Marshall. American viewers didn't get to see this one until February 28, 1968.