This is book number 30 in the Hercule Poirot Mysteries series.
A most unusual series of crimes at a student hostel intrigues Inspector Hercule Poirot in Agatha Christie’s Hickory Dickory Dock, especially when a simple case of kleptomania paves the way to murder.
Hercule Poirot doesn’t need all his detective skills to realize something is troubling his secretary, Miss Lemon—she has made three mistakes in a simple letter. It seems an outbreak of kleptomania at the student hostel in which her sister works is distracting his usually efficient assistant.
Deciding that desperate times call for desperate measures, the great detective agrees to investigate. Unknown to Poirot, however, desperation is a motive he shares with a killer. . . .
Agatha Christie is the most widely published author of all time, outsold only by the Bible and Shakespeare. Her books have sold more than a billion copies in English and another billion in a hundred foreign languages. She died in 1976, after a prolific career spanning six decades.