Awesome book, but a little harder to understand for younger readers.
Plot
While on a mission, Mr. Benedict and Number Two are captured by the villainous Ledroptha Curtain. Now it's up to Reynie, Sticky, Kate, and Constance to save them in four days or all will be lost.
Morality
Kate has the choice of killing her enemies or letting them live and she learns that if she acts like her enemies, then she's no better than they are. All in all, the morality is good and it is a good-against-evil story.
Spiritual Content
None.
Violence
The Ten Men have shock watches and a few people mention getting shocked by the wires. People get knocked unconscious and the Shortcut almost gets blown up by a bomb that Mr. Curtain throws on board. There is no other graphic violence.
Drug and Alcohol Content
There's a Bon Voyage party on the Shortcut and wine is mentioned, but nothing other than that.
Sexual Content
Sticky mentions briefly having a girlfriend (she broke up with him because he remarked upon her pulchritude). Besides that, there's nothing else.
Crude or Profane Language or Content
It does mention a few times that somebody curses but doesn't give an exact word or description.
Conclusion
A very enjoyable book. It resembles an other-worldly experience like "Charlie and the Chocolate Factory". Overall, it's a on-the-edge-of-your-seat, stay-up-all-night-to-finish-it kind of book.