The play opened on Broadway on 21 April 2018 at the Lyric Theatre, with previews starting on 16 March 2018. Previews of the play began at the Palace Theatre, London, on 7 June 2016, and it premiered on 30 July 2016. Harry Potter and the Cursed Child is a 2016 British two-part play written by Jack Thorne based on an original story by J.