A librarian helps a desperate student find the door into a book; Sir Thomas Moore's head is stolen and a messy rescue ensues; a mother sells a piece of her memory so her daughter can afford an education.Science fiction is the story of what if and what comes next. It's more playful, more inclusive and more entertaining than it has ever been before and as the world falls apart around us, it offers us a chance to understand how things could be better, or just how a great story can get us through another night.The Best Science Fiction and Fantasy of the Year: Volume Thirteen brings together the very best clashes between zombies and unicorns, robots and fairies, spaceships and more in a definitive volume that takes us everywhere from the distant future and the moons of our own solar system, to one last visit to Earthsea...Featuring stories from Kelly Barnhill // Elizabeth Bear // Brooke Bolander // Zen Cho // P. Djeli Clark // John Crowley // Andy Duncan // Jeffrey Ford // Daryl Gregory // Alix E. Harrow // Maria Dahvana Headley // Simone Heller // S. L. Huang // Dave Hutchinson // N. K. Jemisin // T. Kingfisher // Naomi Kritzer // Rich Larson // Ursula K. Le Guin // Yoon Ha Lee // Ken Liu // Carmen Maria Machado // Annalee Newitz // Garth Nix // Naomi Novik // S. Qiouyi Lu // Kelly Robson // Vandana Singh // Tade Thompson // Alyssa Wong