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 an...
La trama se centra en el esclarecimiento de la muerte de una maestra, colega de la profesora Withers. Entre ella y Piper intentarán desentrañar el misterio.
