Westinghouse Desilu Playhouse S01 E23 The Innocent Assassin

Eileen Gorman and Jamsie Corcoran are in love, but they live in 1921 Dublin, Ireland, and their romance is blighted by civil strife. Their fathers are partisans of the Irish Republican Army, fighting the British. Their IRA group decides that a traitor must be killed, and Jamsie is assigned to assassinate him.