Darkfever isn't my favorite because Mac is really annoying in the beginning but fantastic nonetheless. The great story makes up for it. You're pulled in the dark world of the Seelie and Unseelie and it doesn't let you go. I read the first 4 books in one weekend and had to suffer agony before they released the last book. The Fever series is more like one continuing story divided in five parts. So prepare to get sucked in and not released until the final page of Shadowfever. 
 Oh and I want Jericho Barrons babies, that or his bookstore