This year's selection of science fiction and fantasy stories, chosen by series editor John Joseph Adams and bestselling author of the Divergent series Veronica Roth, showcases a crop of authors that are willing to experiment and tantalize readers with new takes on classic themes and by exchanging the ordinary for the avant-garde. Folktales and lore come alive, the dead rise, the depths of space are traversed, and magic threads itself through singular moments of love and loss, illuminating the circulatory nature of life, death, the in-between, and the hereafter. The Best American Science Fiction and Fantasy 2021 captures the all-too-real cataclysm of human nature, claiming its place in the series with compelling prose, lyrical composition, and curiosity's never-ending pursuit of discovering the unknown.