Violent Midnight (1963)

When one of his models is found dead, Korean War veteran and painter Elliott Freeman (Lee Philips) becomes the primary suspect in the case. A bold detective tries to identify the murderer and investigates the girl's ex-boyfriend (James Farentino), who fought with Elliott the night before the murder, as well as a mysterious professor (Day Tuttle). But when another woman close to Elliott is murdered in the same fashion, Elliott fights to claim his innocence despite the evidence against him.