"Haunting and hopeful...a magic so vivid it feels more like a memory than a work of fiction."—Alix E. Harrow, New York Times bestselling author of The Once and Future WitchesNAMED A MOST-ANTICIPATED BOOK BY Good Housekeeping, Gizmodo, Den of Geek, Tor.com, and more!Walk through the door and leave all your problems behind…but you don't know what's on the other side. And once you leave, you'll never come back. Will you go through?Maren Walker told herself she wouldn't need to sell pills for long, that it was only means to an end. But that end seems to be stretching as far away as the other side of Blackdamp County, Kentucky. There's always another bill for Granny's doctor, another problem with the car, another reason she's getting nowhere.She dreams of walking through her little door to leave it all behind. The doors have appeared to the people in her mountain town for as long as anyone can remember, though no one knows where they lead. All anyone knows is that if you go, you'll never co