"Twelve-year-old Kyle gets to stay overnight in the new town library, designed by his hero (the famous gamemaker Luigi Lemoncello), with other students but finds that come morning he must work with friends to solve puzzles in order to escape"--
In Nice to recover the Queen's stolen snuff box, Lady Georgiana Rannoch participates in a Coco Chanel fashion show where a necklace also belonging to the Queen goes missing, forcing her to search for both priceless items and solve a murder.
During rehearsals for a play based on his stepmother's bestselling children's books, eleven-year-old Zack discovers that the director is planning to raise a horde of evil specters from the dead by offering up a human sacrifice.
When eleven-year-old Zack Jennings moves to Connecticut with his father and new stepmother, they must deal with the ghosts left behind by a terrible accident, as well as another kind of ghost from Zack's past.
While volunteering as a magazine delivery girl in a convalescent hospital during the Second World War, Molly uncovers a mystery involving the theft of rationed food supplies for sale on the black market.