Twelve-year-old Viviani Fedeler, proud resident of the New York Public Library, has her sights set on becoming a star reporter. She's thrilled when Miss Hutch announces a story contest where the winner gets their essay printed in the New York Times! But then Viviani gets her first-ever case of writer's block. As she struggles to find inspiration, the library is hit with a strange mystery involving overdue books, secret messages, and perhaps a spy lurking among the shelves . . . Will Viviani be able to crack the code and find the perfect story worthy of a byline?