Sudden Fear is a Hitchcock-influenced drama starring Joan Crawford and Jack Palance.
A little background on Jack Palance: In 1964 Jack Palance was protesting the segregation of a move theater in Tuscaloosa Alabama by attending a movie along with both white and black spectators. He had his wife and children with him. Several Klansmen came in and sat behind Palance and were threatening and harassing the family. Mr. Palance stood up, turned around, and simply told the Klansman that they were disturbing his children, whereupon the Klansmen ran away, since Mr. Planace was such an imposing figure, so says my mother, who I believe was present. Upon hearing her telling of the story, I imagined that Mr. Palance could have simply bopped each of the Klanmen on the head, and they would have been hammered into the ground like pegs, right there where they stood in the theater.
More Jack Palance: Man in the Attic