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In New Orleans during Mardi Gras, Bart (Jack Kelly) witnesses the murder (or more accurately, the execution) of a wine merchant named Agostino (Joe Garcio). But when he tries to report the crime, Bart is accused of being the murderer himself. It soon develops that the killing was ordered by the local branch of the sinister "Black Hand" (a 1960s TV code-word for the Mafia), whose minions are determined to shut Bart up permanently before he can persuade someone to believe in his innocence. This episode was cowritten by actor Leo Gordon, who'd appeared in previous Maverick installments in the recurring role of Big Mike McComb.