A brilliant English detective story set in the mysterious and sinister world of a boarding school. The tale of twin sisters who must unravel the secrets and riddles of their school. Mr. Bartholomew, the school’s new headmaster, is no less dangerous than Miss Fox. He threatens severe punishment even for the slightest misdemeanor—and he has something to do with the tragedy that happened in Rookwood many years ago. My sister and I—Scarlett and I—must figure out what he’s planning this time, because it depends not only on the well-being of the students, but also on my sister’s life. When strange inscriptions appeared on the walls in the basement, left behind by some “Whisperers,” Scarlett and I understand that the danger is much closer than we thought…