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Plot
There are plenty of guilty secrets at the school where Hildegarde Withers teaches. When she finds the body of the pretty music teacher, she calls in her old friend Inspector Piper, who promptly arrests the obvious suspect. Clues multiply and everyone looks suspicious as Piper and Miss Withers continue their battle of the sexes.
Where to watch Murder on the Blackboard?
Murder on the Blackboard is a comedy movie featuring Edna May Oliver.
Murder on the Blackboard is currently streaming on TCM.