Murder on the Blackboard
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.
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Director: George Archainbaud
Actors: Barbara Fritchie, Bruce Cabot, Edgar Kennedy, Edna May Oliver, Frederick Vogeding, Gertrude Michael, Jackie Searl, James Gleason, Regis Toomey, Tully Marshall