If you give a girl a wish, she has magic for a day. If you teach a girl to grant her own wishes... well, that never happens, does it? Twelve-year-old Alexandra Gilliam is as good as her word. After all, breaking promises would set a bad example for her five younger brothers and sisters. By the time a magical key offers the children a wish apiece, they’ve read enough books to ask for things they actually want. From the high seas to the bright side of the moon, no place is beyond their reach, but Alexandra wants something even more ambitious: the power to do magic herself. She strikes a bargain with the key: it will teach her everything it knows, and she will keep the lessons secret from everyone she loves. A tidy, straightforward plan—except magic takes a while to learn, and the key will only stick around as long as there are wishes to grant, and Alexandra’s family is beginning to wonder what she’s hiding from them. For nine rollercoaster days, Alexandra will be stretched to her limits, reaching for the person she’s always wanted to be while doing her best to hold on to the person she’s always been. She’s never told a lie in her life, but if that’s the price of magic, she just might pay it—even if it costs her the trust of the people she cares about the most.