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Wounded during a robbery, a two-bit thief awakens in Steed's apartment. After intense interrogation, the thief lets slip that he is a small cog in a huge world-wide crime syndicate. In order to infiltrate the villains' headquarters, Cathy poses as German criminal Hilda Stern, who at present is safely behind bars. . .or is she? The principal heavy is played by Kenneth J. Warren, who later played the demented movie producer in the Diana Rigg episode "Epic." Written by Terrance Dicks and Malcolm Hulke, "Intercrime" made its British TV premiere on January 5, 1963, and its American TV bow on February 14, 1991.