The early Anita books are excellent. Just read them in order and stop at Obsidian Butterfly. Seriously - if you enjoy Merry, you'll probably love Anita up to that point.

When does Doyle get his book, damn it! ;)

You're a Doyle fan, too? I'm just guessing, but from the way this one ended I suspect Doyle's will be next. You'll have to let me know when you've read the latest - we can chat about it.