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.
'Chasing Vermeer' by Blue Balliett: When strange and seemingly unrelated events start to happen and a precious Vermeer painting disappears, eleven-year-olds Petra and Calder combine their talents to solve an international art scandal.
Harriet the Spy by Louise Fitzhugh. Harriet M. Welsch is a spy. In her notebook, she writes down everything she knows about everyone, even her classmates and her best friends. Then Harriet loses track of her notebook, and it ends up in the wrong hands.
In 1871 Wisconsin, thirteen-year-old Georgia sets out to find her sister Agatha, presumed dead when remains are found wearing the dress she was last seen in, and before the end of the year gains fame as a sharpshooter and foiler of counterfeiters.