From 4 stars down to 2.5
This book really drew me in, for starters because I liked the concept and because it reminded me a bit of Lost Girl. In that show, a human medical doctor/researcher treats supernatural beings but it is seen from a person this author would call an "unusual". In this case, however, the author opens the reader up to the human perspective of the supernatural, hidden community and powers that be, and does so quite well.
Unfortunately, the further the book progressed, the more noticeable became the lack of editing and beginner writer mistakes, such as plot holes, redundancies, and repetions.
The main character Dean gets thrown into a specialized EMS unit and straight into the job WITHOUT being even being given a crash course of species of unusuals most commonly encountered, routine medical problems and potential dangers he might encounter with each, as well as general treatment options. First, while on the job training is a thing that will bring the most authentic experience and practice, throwing the new EMT into the cold water completely unprepared would be endangerment of the EMT and his patients. Second, anyone suddenly faced with something generally as unbelievable as a werewolf might freeze, hesitate to act in the patients best interest, or flee in shock, followed by blurting out what they have seen in public, thus exposing the very people ("unusuals") they're meant to help and protect.
Transferring such a disillusioned EMT into a regular unit would be risky, in terms of exposure of the hidden, supernatural, community, as well.
While the author clearly shows their extensive EMT knowledge, the remedies suggested for different types of unusuals only make sense part of the time. Garlic to keep a vampire victim from turning and to help their heart makes sense, because it coincides with actual garlic benefits and to a degree, with vampire lore.
I became extremely concerned with the author mentioning wolfsbane to counteract "the odd lycan bite". Wolfsbane, aka Monkshood or Aconite would make sense to take down/kill a fictional werewolf (or really anyone) because, in reality, it contains one of the most potent nerve toxins around. However, it should never be ingested, given intravenously, or even touched without gloves. It can dangerously lower one's heart rate, cause arrhythmias, and affect circulation and nerve function. Maybe I'm overly cautious, but I worry that some under-informed, overly imaginative, person might try to buy, harvest, or (incorrectly) handle this plant, without realizing its toxicity, to cure an ailment -- and end up unintentionally poisoning themself, after reading this (On the Internet, there are just as many stories of people trying to cure joint pain etc. with this plant as there are stories of unintentional poisonings)...
The author did do a good job at raising awareness to erase mental health stigma among first responders, which I applaud.
Another sensitivity related concern came up with the use of the term "Wicca". The author uses several references to Wiccan religion and Wiccan people/practitioners as species of "unusual" or supernatural beings (which are also often derogatorily as "monsters" with powers elsewhere)... This goes down a slippery slope and likely offends actual people within the Wiccan belief system. If one wants to add WITCHES with supernatural powers into the community of "unusuals", that is one thing but using a known religious faith as a descriptor is a big No-No. Besides, even in this reality, witchcraft may be practiced by Wiccans, Pagans, Druids, Santeria practitioners, and many others as much as they may only observe simple rituals, prayer, or holidays (and not be interested in spells of any sort). Likewise, the pentagram is much more widely used than just in Wicca. Assuming it is automatically worn by a Wiccan is just as stereotypical as would be the assumption the person was a satanist. The question is whether the author would be comfortable labeling any pentagram user as "unusual", regardless of actual belief system, and whether they'd be comfortable using other religious labels, like Baptist, Hindu, or Jewish, exchangeably to Wicca, within the same context of "unusual-ness". I think: not. Belief systems or religious practices/rituals do not automatically equal beings with supernatural powers.
Finally, I agree with other reviewers on the ending being abrupt and leaving too many loose ends untied. It almost forces the reader to buy all the other books in the series so as to hopefully feel satisfied at the very end. I'd like to read the other books because of the cool premise, story line, and to see the characters fleshed out a bit more, but I'm on a fixed budget. So here I am with this excessively huge cliffhanger and no resolution whatsoever...
All this being said, the book kept me engaged and entertained. Without the problems I pointed out, it could have easily warranted a 4-star rating (and I rarely do 5 star ratings). I even felt I learned something helpful in terms of emergency medicine and didn't mind the medical details too much. However, the author missed some really important things, which resulted in my 2.5 star rating (rounded to 3).