The story is a mystery set on an alien planet. There is action, adventure, monsters, but not a lot of gore or violence. The Tenth Doctor is at his best when trying to solve the mystery, pulling all the clues together in one big pile and working on them till he gets an answer. Both Rose and the Doctor seem to be in character and the setting is interesting, along with a few of the ideas that make up the theme of the novel. The idea of a truly balanced planet, where everything in nature works together, is the main merit of this paradise. And its greatest danger.
A good travel book. Light, solid, worth a once over. Has the feeling of a young adult novel or a Doctor Who episode from the 60's and 70's.