...Doesn't add a great deal to the Potter mythos. We see Harry and his gang as they are in early middle age- but all the significant action takes place in the past or in alternative realities- which allows for cameo appearances from most of our favourite characters- good and evil- including a number of significant resurrections. It's not a stand-alone work; prior knowledge of the books and/or films- most particularly Goblet of Fire- is essential. The action zaps about all over the place, the magic isn't stinted- and it must be an amazing theatrical experience. At the heart of it- holding the farrago together- is a parent-child relationship that needs putting right.