Desire in the Dust

Desire in the Dust is a 1960 film made by 20th Century Fox, directed by William F. Claxton, and produced by Robert L. Lippert. The film stars Raymond Burr, Martha Hyer and Joan Bennett. The screenplay was written by Charles Lang, based on a novel by Harry Whittington.

Somewhat miffed about all this, Lonnie incites Dr. Ned about his wifes infidelity, which Dr. Ned verifies when he catches Lonnie and Melinda in a semitorrid embrace in Colonel Marquands hunting lodge. Melinda, looking for an explanation, shoots and wounds Lonnie to defend her innocence by claiming she was being raped.Colonel Marquand Raymond Burr, who had bribed Lonnie to take the blame for his daughter, uses her story to have Sheriff Wheaton Kelly Thordsen kill Lonnie, thereby putting an end to all this mess. Mrs. Marquand Joan Bennett eventually faces Daveys death and realizes that she witnessed Melinda run down her little brother. ........

Source: Wikipedia