This is book number 32 in the Hercule Poirot Mysteries series.
In this exclusive authorized edition from the Queen of Mystery, murder is part of the curriculum at an exclusive school for girls, and the intrepid Poirot sets out to bring a stealthy killer to justice.
Late one night, two teachers investigate a mysterious flashing light in the sports pavilion while the rest of the school sleeps. There, among the lacrosse sticks, they stumble upon the body of an unpopular games mistress—shot through the heart point-blank.
The school is thrown into chaos when the "cat" strikes again. Unfortunately, schoolgirl Julia Upjohn knows too much. In particular, she knows that without Hercule Poirot's help, she will be the next victim....
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.