Alfred Hitchcock Presents Season 1 Episode 3

Red Hillman challenges a cowboy named Del Delaney to a shootout. When Maggie Flynn tries to stop them, she is ignored. The two men decide to draw when a clock on the mantel strikes the hour. Maggie takes a cross off of the mantle and says she wants to protect it from possible damage from a stray bullet. As the two are about to duel, they notice that the mantel clock has stopped. Maggie claims that it is a sign from God that there should be no duel. The two men are surprised and believe her. They make their peace and go away. Later Maggie reveals the truth. She explains that cross was on the mantel to balance the clock. The clock stopped because she moved the cross.