"Every Heart a Doorway" is a fantasy novel by Seanan McGuire that explores the lives of teenagers who have returned from magical worlds. These young people find themselves at a special boarding school called Eleanor West's Home for Wayward Children, where they can connect with others who share their experiences and struggles. The story follows Nancy, a new arrival at the school, as she navigates her feelings of loss and belonging. The narrative delves into themes of identity, acceptance, and the challenges of returning to reality after experiencing extraordinary adventures in alternate realms.