The Secret of the Prickwillow School

A crime has occurred at the closed school for girls! On a wonderful May day during Sunday lunch, the headmistress and her brother fell dead. Seven students realize that Mrs. Plackett and Mr. Godding were poisoned, but by whom?! And if the neighbors find out, the school will surely be closed, and the girls will be sent back home. Meanwhile, visitors arrive at the school one after another, very inconveniently (for example, an admiral in love with the headmistress!). Therefore, the girls decided to pretend that nothing happened and hide the crime. Moreover, it turned out that the headmistress's financial situation is very bad. So, what funds were used to maintain the school?! And who is the killer after all? Each of the students is talented in their own way, and together they take on the investigation.