Some brief, spoiler-filled thoughts.
This book is a couple of plays. It reads like plays, and it moves at the pace of plays. That is, plot development is not especially deep. That said, it seems like it would have been brilliant to watch live. It is highly entertaining. As a person who enjoys Harry Potter but not the Harry Potter phenomenon, and who thinks there are other, better children’s fantasy books, it gave me what I wanted.
But what, really, does this add to the Potterverse? Almost nothing. We see an outlandishly happy ending for all the good guys — they grow up to be influential bureaucrats and civil servants, which I think is supposed to be a good thing? And the play basically ends status quo ante bellum.
What does it provide us, then, besides a bit more fun and Voldemort’s daughter? It gives us what plays are good at. Plays — and, really, I only know Greek tragedy and comedy and Shakespeare besides Murder in the Cathedral — are more about characters and psychology than plot. Epics and novels and romances are for plot, films as well.
That’s what this play gets us — we see insight into what it means to be the man who was the Boy Who Lived, to be his son. We have fathers and sons. We have themes of friendship and loyalty and depth of love. We see Draco and Harry become friends because their sons are friends.
So, no, this book won’t really add an ‘eighth story’ like the first seven. But it adds something, some depth as well as glimpses of what life could have been.