By Kekla Magoon 
A deeply satisfying, page-turning, genre-defying read. Kirkus Reviews (starred review) 
Since Grandpa died, Dallys days are dull and restricted. Shes eleven and a half years old, and her exacting single mother is already preparing her to take over the family business. Starved for adventure and release, Dally rescues a mysterious envelope from her mothers clutches, an envelope Grandpa had earmarked for her. The map she finds inside leads straight to an ancient vault, a library of secrets where each book is a portal to a precise moment in time. As Dally checks out adventure after adventure, including an exhilarating outing with pirates, she begins to dive deep into her familys hidden history. Soon shes visiting every day to escape the demands of the present. But the library has secrets of its own, intentions that would shape her life as surely as her mothers meticulous plans. What will Dally choose? Equal parts mystery and adventure, with a biracial child puzzling out her identity alongside the legacy of the past, this masterful middle-grade fantasy rivets with crackling prose, playful plot twists, and timeless themes. A satisfying choice for fans of Kindred and When You Reach Me.