This was quite an enjoyable read, filled with the right mix of action, procedural and a little bit of steaminess. 
 Kara is a nice reprieve from the usual PNR heroine, thank goodness. She's a good blend of sarcastic and tough, yet very relatable with just a smidge of vulnerability (but not enough to turn her into a weepy, pathetic mess). The only thing I didn't like was that she was given the tired 'Rape/Child Molestation as back story' trope, but it was only mentioned offhand a few times and didn't colour Kara's entire world like it does with some characters. I also wasn't fond of how three people who she barely knew found out she was a summoner, two of them because she flat out told them. Isn't that kind of thing supposed to be a secret? Other than that, I liked Kara a lot. 
 The sex scene with Rhyzkahl threw me off when it came up. I mean, she accidentally summoned him and then they end up screwing? It just felt very out of place. I get it, he was gorgeous and she was sexually deprived, but yeesh! I didn't find him very swoon-worthy, he just always seemed like he had some agenda which, of course, he does! Something tells me I haven't seen the last of him, unfortunately. He's just really not that interesting to me: immensely power, beautiful and manipulative, a typical PNR hero. Yawn. 
 Ryan, on the other hand, was a good character, he wasn't some flat, two dimensional pretty boy for Kara to drool over that was either an alpha male douchebag or some doormat with the personality of a stump. He reminds me of Hotch from Criminal Minds in a very good way. 
 The identity of the Symbol Man completely blindsided me. (view spoiler)[ I thought for sure it was Reverend Thomas from the second he made his appearance and as the story progressed the evidence wasn't doing him any favours, but then it turned out to be Chief Morse? Well played, Ms. Rowland, very well played. (hide spoiler)] 
 Looking forward to Blood of the Demon!