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Ben Cartwright is an eyewitness when ex-convict Jack Groat (Charles Maxwell shoots down the son of Ben's old friend Lem Partridge (Lyle Bettger). Inasmuch as Groat had previously been thrown in prison for the murder of Lem's wife, Lem cannot understand why Ben did not intervene when Groat committed his most recent killing. Determining that everyone including Ben has failed him, Lem vows to avenge the deaths of his wife and son all by himself-but, as usual, there is more to the story than meets the eye. Anne Benton is seen as Caroline, while Edward C. Platt plays Wade. Written by Clifford Irving, "The Guilty" first aired on February 25, 1962.