Which play did J.K. Rowling co-write about Harry Potter’s adult life?

J.K. Rowling co-wrote Harry Potter and the Cursed Child about Harry Potter’s adult life.

Harry Potter and the Cursed Child is a stage play by Jack Thorne, based on an original story by Thorne, Rowling, and John Tiffany. It premiered in London’s West End in 2016. The published script is presented as the eighth official story in the Harry Potter series.

The plot begins nineteen years after the events of Harry Potter and the Deathly Hallows. Harry is an adult working at the Ministry of Magic, while his son Albus struggles with his family legacy and forms a friendship with Scorpius Malfoy.

Rowling was not the play’s sole writer. Thorne wrote the script, Tiffany directed the original production, and Rowling participated in developing the story. This distinction often causes the work to be described inaccurately as another Rowling novel.