Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Historical Excellence

One of the more believable and the best children's writer of the 20th century, Joan Aiken writes about Felix, now 18, in the final instalment of the trilogy set in early 19th century Spain that is riven by factions. One of the main aspects of her writing is that she doesn't hold back & shy away from killing off people you'd expect in others twee world to miraculously escape. In this novel Felix is set up by a friend of Juana (from Bridle the Wind) to try & attack his liberal grandfather who is under suspicion from the court of the newly restored King Ferdinand. Here he's asked to rescue the friend's children from her rebel husband but, in reality, she wants him declared insane so that she can inherit his estates rather than have them forfeit to the crown. There are many twists & turns but Felix triumphs in the end.