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A highly respected government minister is caught trying to steal top-secret documents. Figuring that there's more to the story than meets the eye, Steed poses as a "genius" and joins an exclusive club for intellectuals in which the supposed traitor was also a member. Meanwhile, Emma is subjected to a particularly nasty session of psychological torture. Written by Robert Banks Stewart, "The Master Minds" originally aired in England on November 6, 1965; its American TV debut occured some eight months later, on July 11, 1966.