If you've read any of my other Kara Gillian reviews (particularly Touch of the Demon), you'd know that I wasn't a fan of the shift from Earth to the Demonic Realm and the introduction of way too many new characters in favour of the ones we'd followed since Mark of the Demon. So I was really excited when the book blurb indicated that Kara would spend the majority of Fury of the Demon on Earth, figuring that Ryan, Jill, Zack, and Eilahn would be back in a big way. 
 Well, I was in for a bit of a letdown. 
 I'll start by saying that this was in no way a bad book, just like Touch of the Demon wasn't a bad book. It's just not what I was expecting from Kara and her adventures at all. She might as well have stayed in the Demonic Realm for the entirety of the book because, once again, Ryan, Jill, and Zack are shoved to the side in favour of even more new characters. Okay, I get that Jill is very pregnant and can't do much, and I know Zack is trying to keep Szerain stable under the Ryan overlay, but that's no excuse to bring in a new trio of Kara-loyalists. Paul, Bryce, and Sonny aren't terrible, per say (Paul is the only really interesting one), but they're not who I wanted Kara to kick all of the ass with. 
 Mzatal... ugh. I have a distaste for the new Demonic Lord in Kara's life, although it's different than my loathing of Rhyzkahl. His relationship with Kara borders weird and cringeworthy. They constantly coo affection at each other but she seems more like his student or employee (the 'Boss' thing doesn't help) than a romantic partner. It's just creepy to read. I get that after Rhyzkahl's sneaky underhandedness and betrayal that nobody wants to be worrying about yet another Demonic Lord, but Mzatal comes across as too perfect. Half the time he doesn't do anything except when he's fixing some magical issue for Kara. Seriously, I was expecting someone from the new trio (my bet was on Sonny or Bryce) to betray Kara, but thanks to Mzatal's perfect perfectness, no deceit was found and they all jumped on Team Kara immediately. 
 I also was not a huge fan of the rakkuhr virus and its effect on Kara throughout the book, causing her to lapse into a "Who am I?" shtick before shaking it off, until it gets so bad that everyone has to say her name at least once a minute or else she'll turn into Rowan, Rhyzkahl's puppet. Szerain ends up fixing it, so at least I won't have to deal with it for another three books. 
 Speaking of Szerain, let's talk about Ryan, who barely gets any development in this damned book. Pushing Kara's annoying relationship with Mzatal aside, I can understand why she wouldn't want to let Ryan in, afraid that 'Ryan' will disappear and Szerain will take over... but then why the hell did she tell him that she loves him? She firmly shoved him into the friendzone this book and is all about her perfectly perfect relationship with Mzatal. (view spoiler)[At the end we learn that Szerain has somehow become Ryan with Szerain awareness thanks to using Vsuhl to fix the rakkuhr virus. Whether this becomes a good or bad thing later is still unknown. Me personally, I'm hoping that Szerain retains enough Ryan-ness because Ryan is my favourite character. (hide spoiler)] 
 Someone should clue me in on why they waited four months to try and find Idris, because Kara's supposed training that took place between Touch and Fury didn't really seem like it made a difference? She was doing what she basically did before, except she kept pygah-ing constantly when she was stressed out. I miss cop/demon summoner Kara. She's still okay, but sometimes I can't help but wish that the series hadn't made such a major shift and an entirely new series with different characters had told this particular story, because I'm not the biggest fan of where it's heading. It's still a great read, but not what I expected. 
 Fury of the Demon gets a solid three stars from me, the same as its predecessor, Touch of the Demon. It's not as awesome as the first four books of the Kara Gillian series, but it is by no means a terrible read.