Play continues the story 19 years after the end of the last book, with Potter's son Albus navigating his way through HogwartsThe Hogwarts ties, gowns and familiar smiles told their own story as a generation who cut their teeth on the first Harry Potter book nearly 20 years ago lined up on Tuesday night, waiting for the latest chapter in their hero's story to be revealed on stage.In a queue which snaked its way around…
