 Several days later, the girls discover that many of their letters to their friends and family have been withheld from them.Kit and Sandy also determine that if they do not leave Blackwood before Christmas vacation, the psychic bonds will become permanent and they will never be free from the harassment of the dead.In an effort to escape the school, Kit slips a letter to Blackwood's former cook and tells her to get it to Tracy Rosenblum, Kit's best friend.