Bonanza
The Lonely House (3x4)
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Little Joe pays a visit to the widow Lee Bolden, and brings her a bank draft for her husband's investments with Ben. Actually, the investments were losing propositions. Ben just wanted to help out his friend. During his visit, a wounded man stumbles into the house, and Joe recognizes him as Trock, who had just robbed the local bank. Lee Bolden was a nurse to her husband physician, and removes the bullet from Trock. Joe soon learns that Lee is in love with Trock, and that is the only thing standing between him and an early grave.