The Wayward Children Series is a fantasy book series written by Seanan McGuire. It follows the adventures of children who discover doors to other worlds, each reflecting their deepest desires. When they return to the real world, they often struggle to fit in, leading them to a special school that helps them navigate their experiences. The series includes several novellas, starting with Every Heart a Doorway, which introduces the school and its unique students. Each installment explores different characters and their journeys, delving into themes of identity, belonging, and the complexities of growing up.