Otto Schweitzer, the Janitor (as Fredrik Vogeding)
Barbara Fritchie
Louise Halloran
Gustav von Seyffertitz
Dr. Max Von Immen
Tom Herbert
Detective McTeague
Jed Prouty
Dr. Levine
Wade Boteler
Bearded diner (Uncredited)
Tommy Bupp
School boy (uncredited)
Frank Mills
Diner Counterman (uncredited)
Monte Vandergrift
Policeman (uncredited)
Murder on the Blackboard
⭐57.00% /
15th Jun 34 /
Comedy, Mystery, Thriller
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.