The series is based on the book of the same name by Louise Fitzhugh. It stars Beanie Feldstein as Harriet, Jane Lynch as Ole Golly and Lacey Chabert as Marion Hawthorne. The series premiered on November 19, 2021, and 5 more episodes aired on May 20, 2022. Season 2 was released on May 5, 2023. Michelle Trachtenberg, who had previously played the titular character in the 1996 film, would be guest starring as the voice of Dr. Wagner.