When I started this book, I was afraid it was going to wind up with me rounding down to just a Goodreads 2-star, because Trick didn't make a good first or even second impression on me, with his cocky recklessness, the chip on his shoulder, and (let me be honest) his bit of a kink. However, as he became a real part of the team, and as his relationship with Mackey grew into a meaningful one for both of them, he grew on me, too.
The exciting crisis moments of defending citizens and/or teammates from "wildlife" (meaning wild sharks and other predators) in their marine rescue job are far from the only intense scenes in emotional terms. We gradually learn about Mackey's family history, good and bad, and how it left him with a fear of the harm he might do when he loses his rigid self-control. (There's one final revelation I only saw coming when he was bleeding in the chopper near the end.)
Figuring out what the other needs, and building trust, are not easy for either of them, but I love how Mackey naturally starts learning ASL, and how Trick is determined to convince Mackey that he's better than he thinks he is. I also have to say that I love how both these tough guys reveal their little-shown so-called "geeky" sides, and it's another thing to draw them together. Any character is more interesting if they have more going on between their ears than the basic necessities!
Commander Nadine Brackett and Tom Nichols are an intriguing pair themselves (and I'm glad to see that she knows that her schemes aren't always perfectly aimed) but, unfortunately, I suspect we're only going to get glimpses of them in books centered on the various shifter teams they interact with. Are the northern-waters researchers-slash-treasure-hunters going to be next?
I only caught one minor typo, a missing opening quotation mark in the author's note, in which, by the way, she explains her choices re. how ASL speech is rendered in the text.