Murder on the Blackboard

本片由乔治·阿切因波特导演杰基·瑟尔,杰德·普罗蒂,Gertrude Michael主演，于未知美国上映！

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.