Look, a new teen series by Mercedes Lackey! And Rosemary Edghill, too.
With a kind of weird cover that I'm not a fan of, but I didn't really contemplate the cover, I just read the book.
Essentially, this novel is what you get if you combine Lackey's Heralds of Valdemar series, minus the Companions, plus some Harry Potter-esque elements and make everything happen to Tragic Orphans.
I enjoyed it, honestly - it's a fun plunge into fantasy teen fiction, filled with angst and magic and mysteries that will presumably be solved in the next installments of this Shadow Grail series. So yeah, I'll keep an eye out for the next installments but I probably won't buy them all.