Three friends — Ilya, Kira, and Sashka — unite as the team "IKS" to investigate mysterious events. They study, make friends, argue, and reconcile… and also take on tasks that send shivers down the spines of even the teachers!
Something strange is happening in the school library of an ancient boarding house: books fall by themselves, shadows flicker among the shelves, and staff hear mysterious voices. Some talk about a ghost, while others consider it a silly prank. The three friends: Ilya, Kira, and Sashka, armed with a voice recorder, a camera, and the desire to uncover the mystery, begin their first investigation.
The action of the stories unfolds in a unique place — a school-boarding house located in a former merchant estate of the nineteenth century. The author of the series, Svetlana Krivoshlykova, masterfully describes the mysterious atmosphere of the ancient building and the secrets it holds. The combination of the spirit of a closed boarding house with the modern life of ordinary schoolchildren makes reading exciting, and uncovering the mysteries memorable.