I was planning on quitting this series if this one didn't measure up. Looks like I'm sticking around.
Morgan shows up at Harry's house with the Wardens on his trail, framed for murder. Harry goes about trying to clear Morgan's name, all the while dealing with a summoner named Binder and a demon called the Skinwalker. Meanwhile, the Wardens are coming to Chicago and it looks like the White Court of the vampires is linked to the mysterious Black Circle of wizards Harry is sure exists.
Why am I sticking around? Lots of things happen in this one. People die. Harry accumulates more scars. Harry's relationships with the other wizards and Thomas change. New characters are introduced. The plot advances.
I can't imagine how anyone who has stuck out the series so far would find anything wrong with this one. It wraps up some old plot threads and introduces others.