Harry Potter and the Cursed Child is a two-part stage play written by Jack Thorne based on an original new story by Thorne, J. K. Rowling and John Tiffany. Previews of the play began at the Palace Theatre, London on 7 June 2016, and it officially premiered on 30 July 2016. The play is included in the Harry Potter series.
Both parts of the stage play's script have been released in print and digital formats as Harry Potter and the Cursed Child Parts I & II. The first edition, entitled "Special Rehearsal Edition", corresponded to the script used in the preview shows and was published on 31 July 2016. Since revisions to the script continued after the book was printed, an edited version was released on 25 July 2017, as the "Definitive Collector's Edition".