Cat Among the Pigeons (S11E02)

Agatha Christie's much loved detective Hercule 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 safe haven for the princess after all. (iTunes)