The director of the Chatterbox Library is very worried because a large number of books, films, and magazines have recently gone missing… Who could be behind these disappearances? Luckily, the Crostó sisters have joined the library’s reading clubs and can
use their investigative skills to try to solve the case.
Will they manage to catch the culprits? And even more: will Marcel find out what his favourite author is up to when he slips away behind the bookshelves?