Ned and Nancy track down a ghostly saboteur in the twenty-third book in the Nancy Drew Diaries series, a fresh approach to a classic series. Nancy and Ned are visiting Coffin Hall, an estate turned rare books library, doing research on the library's rumored ghost for an episode of the NedTalks podcast when a fire breaks out in the records room. One of the library's security guards accuses Ned of arson--after all, he was the only one in the room when...