Moon Called was a lot of fun. I knew that Mercy was a shifter- she can become a coyote- and that there were werewolves involved, but that's about it. And this is a werewolf- heavy story, no doubt. It also has a lot of paranormal elements besides- vampires make an appearance and the fae are a part of the story.
Mercy is a mechanic who lives close to the local werewolf pack and being that she's a coyote shifter they pretty much leave her alone. The pack Alpha seems to have a thing for her though. Adam lives behind Mercy's trailer and Mercy gets involved with the pack when a lone werewolf stumbles into their territory, and she tries to help him out. Things escalate from there and when Adam is targeted Mercy has to get involved and call on some old friends for help.
Mercy is a character with a lot of potential. She's independent and tough and more than a match for any of the alpha personalities she runs across- and there are plenty. Being a werewolf story there are a lot of dominance and pack hierarchy issues to sort through, and if there was anything I didn't like it was the constant pack dynamics. On the one hand they were interesting but it could also get to be too much at times. A minor complaint though- on balance I enjoyed everything about this.
This is also a world where the fae have come out to the world at large, and the werewolves are considering doing the same. I wasn't really crazy about that idea, I like it more when the fae or paranormal elements stay hidden, but this is honestly the only real worldbuilding I didn't like. It did feel like there was a lot of set up here but the ground has been laid nicely for continuing adventures.
I think there's a good balance as well between the action and the romance. Mercy and Adam have a cool relationship even as Mercy has a little romantic baggage from the past.