This is one of those rare series that only seems to get stronger the further you get. If I'm completely honest with myself, I think it might be a function of my previous investment, but it doesn't feel that way. 
 So, Verus is still sliding, but the hints of a possibly heroic character change is still on the table, even if he hasn't quite picked it up. I don't think it really counts that he's only being heroic for those that he considers his friends, but at least he's doing it even when said friend is being an asshat. 
 I like Anne. I didn't really like her back in book 3, but she's really grown on me through this book. It helps to actually know her history, I suppose, and the fact this novel is all really about her and Verus makes it super easy. 
 These books are a delight to read mainly because they go down as smooth as silk, the magic is fascinating, and the characters equally so. Evil is complicated, as is good, but more than anything, these novels devote a lot of space to asking some rather hard questions about human nature. They're not just forgettable entertainment, anymore. 
 So who's hidden? Our dark side. 
 Gotta love it.