"The extract about Umbridge is the longest and most revelatory, after Rowling’s admission that her treacly villain was based on one of her own teachers (though she has declined to say which one). Rowling is very good at villains and Umbridge remains one of her most vividly unpleasant creations. We discover how the young Dolores grew into the barbaric Ministry official who divided her family and then banished them from her life. Thankfully, Umbridge gets her comeuppance and is sent to Azkaban.