Donna Reed stars as the headmistress of an exclusive all-girl's prep school. Like the title suggests, the school is being terrorized by a mysterious murderer. Only by discerning the killer's modus operandi can the Good Guys (or Good Girls) unmask the miscreant. Halfway down the cast list is Nancy Cartwright, better known as the voice of Bart Simpson. Deadly Lessons premiered March 7th, 1983.