The Glass Alibi (1946)

Joe Eykner (Douglas Fowley), an opportunistic newspaper reporter, persuades wealthy, Santa Monica widow Linda Vale (Maris Wrixon), to marry him. He and his girlfriend, Belle Martin (Anne Gwynne (I)', are planning on Linda soon dying from her heart ailment. But, renewed by love, Linda's condition is rapidly improving, which prompts her impatient husband to scheme the "perfect" murder, but police homicide-detective, Max Anderson (Paul Kelly), is asking a lot of questions.