Courtney Eaton and Sophie Nélisse, two breakout performers from “Yellowjackets,” will co-star in an adaptation of Kathleen Glasgow’s novel, “Girl in Pieces.”

The Space Program, a New York-based independent film production company led by Lizzie Shapiro, Lexi Tannenholtz and Gus Deardoff, will produce the film alongside Eaton and Nélisse.

“Girl in Pieces” was embraced on BookTok, the TikTok literary subculture, and has been on the New York Times young adult bestseller list for more than three consecutive years. It follows Charlie Davis, a young woman recently released from a psychiatric ward in Minnesota after a suicide attempt. After a move across the country to Tucson, Ariz., Charlie tries to piece her life back together among a band of artists and musicians while dealing with the trauma of childhood abuse, self-harm and homelessness. A toxic relationship with a local musician and the reappearance of her friend from the psych ward...