As a child, my favourite of the Narnia series was Voyage Of The Dawn Treader, but as an adult I think it might just be The Silver Chair. Jill and Eustace make a really good team, the adventure they go on is exciting, and I really enjoyed the mystery of the clues Aslan gave. Puddleglum also added many fun moments and I was sad when they had to leave at the end. Also, seeing Caspian now as an old and dying man was truly devastating.