Books like Deadly Quicksilver Lies

I discovered Glen Cook sometime around 1992, and Deadly Quicksilver Lies was the first "new" Garrett novel I read. It was disappointing, and I'm not sure why, because I like it very much now. There are a lot of storylines going on here that ultimately come together, which makes it a little more challenging than the earlier books in the series--not, you know, War and Peace challenging, but the sort of thing where you can't just nod your way through the book. I love that the heart of the story is not the cross-dressing, or the missing girl, but a quest for three rare first edition novels. Also that TunFaire has a library. A big one. This isn't the first time we've seen that TunFaire is not your typical pseudo-medieval fantasy city, but for a long time it was just background noise for Garrett's adventures. Here's where that definitely stops being the case.