This is the other book I bought at the Audible members only BOGO sale. I'm half way through it and thoroughly enjoying it.
This is the kind of fantasy/time-travel book I enjoy--the light hearted kind.
UPDATE: I'm done and this is now on my re-reads list. Not quite as dark as the Artemis Fowl series and the body count is nowhere near as high but the writer has a definite moral compass and there is a lesson to be learned.
Good book for teens and uppper-grade elementary.