'Harry Potter and the Cursed Child' is a fitting swan song for the Boy Who Lived Spoiler warning: Don't read this review if you haven't finished Harry Potter Book 7. Because this is very much Book 8 in plot terms, we — and the writers of the book — assume you've come that far.*
According to J.K. Rowling, this is it: there will be ** Book 9. The author may one day decide to go all ReichenbachFalls on that statement; still, it falls to us to consider Book 8, also k**wn as the rehearsal script to the just-opened London play (actually a pair of plays) Harry Potter and the Cursed Child, as the absolute and final end of the published Harry Potter ******.*