In the second book, it's mentioned that the characters naturally speak and understand French because of the stone. In this one, the author actually has everyone (mostly) using the older thous and haths and... that got a little awkward. Otherwise, we (me and the kids I was reading with) enjoyed this book. The constant fear of the hunters kept the story moving, and Ambrosius was an intriguing extra character. The story includes a few real people who were martyrs so it is dark at times.