Poirot tackles an intriguing and dangerous murder case involving international espionage, a Middle-Eastern revolution and a missing princess.

Poirot tackles an intriguing and dangerous murder case involving international espionage, a Middle-Eastern revolution and a missing princess. The surviving heir to a Middle-Eastern throne is hidden away from revolutionaries in a small English girl’s school, but when — one by one — teachers are found murdered, it seems the school may not be such a haven for the princess after all.