I haven't read Rebecca Zanetti's precursor Dark Protectors series, and I don't think you need to. There are some very apparent cross-over characters, and while it took me a little bit of time to figure out the ins and outs of this world, I never felt lost. 
 What really helps new readers like myself was the fact that Alexandra (our heroine) is also new to this supernatural world and therefore new readers can learn a lot of the information as Alexandra is learning as well. 
 I really liked the story which consists of Enforcers for the Coven Nine going undercover in a Seattle MC in order to figure out how the drug Apollo is getting on the streets. The drug is one that can be deadly to witches, given the right dosage, and of course the manufacturer must be stopped. 
 Alexandra works for the human police and she's encountering Apollo on her end. The drug isn't only deadly to witches. Humans have been taking it and for a time they feel god-like powers, but if they take too much it causes a quick and, shall we say, fiery death. 
 Of course this is going to bring Alexandra in close contact with Kellach Dunne and because he's a witch and she's human, he has secrets which make him look suspicious. 
 So the storyline was pretty good, and I liked the way it seems things are going to progress with Apollo. I think it's safe to say that not everything is figured out by the end. The problems with the drug, I believe, will push the series forward (at least into the next book). 
 My problem with this book, was Alexandra and Kell. There was just too much back and forth between them. One minute they trust each other the next minute Alexandra is arresting Kell for lying to her. If it was only something that happened once, maybe twice, I could forgive, but it seemed to go on throughout the ENTIRE book. Once things had progressed with Kell and Lex to a certain point, Kell irritated me by not sitting Lex down and coming clean with everything. Lex is supposed to be a good cop, good at her job, but all we see is her making rash, impulsive, decisions, and honestly it makes her look more incompetent than anything else. Unfortunately I felt, even once I got to the end where everything should have been resolved between Kell and Lex, that nothing was truly ever resolved. This wouldn't be an issue if this series was only going to focus on Kell and Lex throughout it's entirety, but the way things are set up, I'm pretty sure it's going to follow the standard of having a different couple with each book. So any real progress these two make on their developing relationship will be done in the background or off page. Just didn't feel settled for me. 
 Despite not being entirely on board with this couple, I like overall what has been started here. There's also been some set-up of things to come for other couples which seem promising. 
 I still plan on reading the next book to come out no question. 
 *Copy provided by NetGalley in exchange for an honest review.