The Unguarded Moment (1956)

Watch The Unguarded Moment: A woman has recently been murdered. A teacher at the nearby high school receives threatening notes from a student. Detective Graham is the only one who believes that she is in danger. She fingers the boy, a popular student. Her teaching career is threatened, as is her life. The detective looks for evidence, and brings him in on burglary and murder charges. Both crimes are solved.