The Children's Hour (1961)

Karen Wright and Martha Dobie have been best friends since college. Now, together they own Wright and Dobie School for Girls with twenty students. They are working hard as headmistresses and teachers to grow the school and make it profitable. Karen is engaged with the local doctor Joe Cardin, who is the nephew of the powerful and influential Mrs. Amelia Tilford. The spiteful liar Mary, who is Amelia's granddaughter and a bad influence to the other girls, is punished by Karen after telling a lie. While this is happening Martha has an argument with her snoopy aunt Lily Mortar in another room. Lily accuses Martha of being jealous and having an unnatural relationship with Karen. Mary's roommate Rosalie Wells overhears the shouting and tells Mary what Mrs. Mortar had said about her niece. The malicious Mary accuses Karen and Martha of being lesbians to her grandmother and Amelia spreads the gossip to the parents of the students who quickly withdraw them from the school. Karen and Martha lose a lawsuit against Amelia and have their lives destroyed. Further, Karen calls off her engagement with Joe when he asks her if what was said about Martha and she was true. The lie ends in a tragedy.