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When a country clergyman is found dead with a gun and a roll of microfilm in his possession, Steed poses as the man's replacement. This enables him to gain access to the venerable crime organization Bibliotek, at present locked in a power struggle. This episode marks the second time that The Avengers utilized a machine gun-wielding nun as a plot device. Written by Eric Paice, "The Little Wonders" first aired in England on January 11, 1964; American viewers finally caught up with the episode when it was shown on the A&E cable network on March 25, 1991.