"They will cast out demons" is an exciting book written by the popular Russian writer Sergey Lukyanenko. This work depicts the difficult investigation of a young psychic who encounters incredible cases related to demonic forces. The author successfully combined the elements of detective and fantasy, creating an exciting story that keeps the reader in suspense until the last page. Each paragraph is filled with intense anticipation and hope for the victory of good over evil. This book will capture your imagination and will not leave fans of mystical adventures indifferent.