The Girl from U.N.C.L.E.

The Little John Doe Affair (1x13)

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A big time gambler, Joey Celeste, has contacted UNCLE with an offer to inform on his bosses. April is sent to Italy to escort him to UNCLE headquarters. However, his old bosses have learned of his intention. They hire a notorius hitman who has never failed to miss his mark to eliminate Celeste.