I enjoyed reading the book, but I was disappointed by the new track of the storyline, as well as the propensity of the author to have every serious discussion where the main character is about to gain vital information take forever. The informant, no matter who it is, hems and haws for paragraphs on end, which in book time is invariably just long enough for some terrible event to interrupt them before whoever it is can spit out a simple sentence or two. Honestly, sometimes you just want to step into the book and slap these guys until they start talking again.
As for the plot points I had problems with, spoilers below.
SPOILERS
This really seemed like a filler book to me. The first and second books both had nifty revelations, but in this one that took a back seat to setting up then next book.
In book one, we get introduced to Maxine, who is linked to five little demons that protect her as bodyguards at night and merge with her skin as super armor during the day. They hunt zombies, which are humans possessed by demons. We learn that the demons are really aliens, and most are trapped in a extradimensional prison created by other aliens, who at this point we assume are good guys. The 'good guy' aliens created 'wardens' to protect humanity, but all of them died out, leaving only Maxine's family line, passed from mother to daughter in an unbroken chain. The zombie demons are weak compared to the others, so they can enter the world and do their thing. We also learn that they are worried about Maxine because of some unknown property of hers that manifested when she was a little girl and scared the heck out of everyone. This book is cool because the whole situation is laid out for us, and things are not what they seem!
In the second book, we find that the 'good guy' aliens, the Aetar, are just as bad as the demons. Maxine's boyfriend Grant, a man who can alter people's outlook by singing, find out he's actually an 'original human', and his power makes him a 'lightbringer'. In this universe, the Aetar are energy beings existing as pure soul, and long ago they found the home world of these 'original' humans. They found out about the lightbringer's power, the power to not just change an outlook, but the very soul itself. The Aetar, being pure soul, freaked out and started a war to subjugate them. Grant was sent forward in time as a baby, so he avoided that, but we find out that the Aetar took those humans, destroyed their home world, and started altering them to suit their every whim. They traveled by using a special 'labyrinth' that transported them through both time and space, so they could make their changes, drop a bunch off on a planet, the pop back thousands of years later to see how their experiments came out. Earth is one of those planets, and our lack of lightbringer powers is the proof that we aren't the originals. In the book, they actually have to fight off a rogue Aetar that was imprisoned along with the demons, and he was warping humans into monsters, but the coolest part was finding out that in a way, all of humanity (except for Grant and his crazy old bodyguard) had already suffered the same fate. Oh yeah, she also gets a cool magic ring that can manifest a magic sword, cover her with armor, and teleport her through space and time using the labyrinth, at the cost of slowly but irreversibly covering her body with living silver armor. Neat!
This book, however, doesn't get a revelation as good as the first two. We find out more about the power that lies within her, but not really enough to satisfy me. It turns out the army of demons are all different clans brought together by the 'reaper kings' even before their tussle 10000 years ago with the Aetar to fight an even tougher enemy. The reaper kings were the same five demons that are with Maxine, although at the time they possessed the power sleeping inside her, and they were the size of buildings instead of the size of teddy bears. The power is actually talking to Maxine now, and talking to others using her mouth, offering her easy ways to solve her problems if she'll just use the evil power. One of the Aetar slaves comes to earth and Grant turns her to their side, but Maxine finds out that the Aetar will probably show up soon, plus the former slave accidentally cracked open part of the demon prison, letting a bunch of them out.
So, now that she has access to this evil power, the demons thing she's their queen. She gives them some orders, but they don't follow them, instead going out and eating a bunch of people. She then bargains with them to make a new army following her, so they can fight the Aetar when they show up later. There is some other stuff that happens along the way... she finds out that her line was never a 'warden' like they thought, but was always a magic prison for the evil power, an even more important prison than the one holding the whole demon army (plus putting the former 'reaper kings' to work). Five thousand years ago, an ancester of hers had access to the same evil power she did (it came to the surface for her too), only the other wardens tried to have her killed. She survived, escaped, then killed all the other wardens when she got back, and thats why there aren't any other wardens anymore. Neat, but not important to the story. Oh, and we found out in the first book that her grandfather was an Aetar inhabiting a human body, but now it seems her father was also less than completely human, and they end up describing both him and this other helpful demon the same way. So I guess her father may or may not be this demon that is the manifestation of the labyrinth they all use to get around. We don't know for sure, because Maxine never bothers to ask anyone in the book, and the way these books go, if you don't see it in the book, it never gets done. Its like their lives get put on hold between chapters, between books, etc.
Right, so we find out some unrelated info about an ancestor, she sets up future books by allying herself with brutal man killers, we find out that 'the boys' are the 'reaper kings', but they don't want to talk about it, and the power Maxine is harboring is scary and all, so scary that it could save the demon races against some threat way worse than the Aetar, but somehow couldn't do squat against the Aetar themselves. What?