This is a great little read. It'd suit a younger reader, who was just finding her feet in the world of chapter books. It's got one of the usual motifs: lone child, benevolent but distant parent figures, great danger, need for them to save the day.
It moves fast through the plot and there's not much in the way of dramatic tension. It's not the kind of book that a kid would get 'stuck' in. And for that reason it might not be terribly compelling for the child who wants real substance and significance in their book.
The baddies are fairly incompetent and a bit menacing, but the main character never feels particularly overwhelmed by them. The minor characters are a bit ineffectual and uncommunicative, which pose one of the problems for the protagonist.
Great, quirky illustrations.
It's an easy read. It has lots of elements that would appeal to a younger reader (pirates, lighthouses, etc).
The main character is happily disobedient, and the adults kind of know that but don't do much about it. There's the occasional lecture, but he really doesn't take it seriously. I think it would be useful to discuss whether the adults are really helping the situation. And how the boy could have helped solve the situation without putting himself in danger. While it's fine within the confines of the story, in real life the strategies he uses don't work. He'd be dead. Swiftly. Horribly.
Another thing that could be useful to talk through is how secrets are kept and why. How does a group of people agree together to live with pain and suffering rather than rally and solve it? Why might they? What is preventing them from reaching a better solution? How could someone convince them to change? What effect does it have to have a secret that no-one can mention? What would happen if someone spoke about it openly?
Following Jesus means being prepared to name the elephant in the room from time to time. Thinking about why this might be better for people and how it can be done without destroying people and relationships could be a good conversation to begin. This book would be a useful context for that.
For younger readers: 4 stars out of 5. For older readers/those who like substance: 2 stars out of 5.