After finishing this book this morning and thinking it over for most of the day, I'm going to give this 3 "I liked it but..." stars. I think my opinion of this book is going to depend on where exactly Ms. Sherwood takes this series and these characters from here, as there is a lot left unresolved, so it's difficult to judge it on its own merits.
The "mystery," such as it was, was written pretty decently and was wrapped up in this book, so unlike my original impression of this so-called serial (these books are really too long to call this a serial) where I assumed it was going to be one mystery extended over all four books, but it's actually a different case in each book. Ok, I guess Eli's murder might be the over-arching mystery, but again, I'll have to see how the rest of this series unfolds. Considering how little Jericho seemed to care about that, I can't see it carrying the weight of a four-book series.
This book is fast-paced and the action is pretty well-written, and it doesn't keep you waiting to find out who is behind everything. Or rather, it doesn't keep the characters waiting the entire book to figure it what you figured out in the second chapter.
The writing in the establishing chapters that set up the premise and gives you most of the background on Jericho and the town is a bit clunky and info-dump-y. There's this bizarre scene where he's pulled into an interrogation room for absolutely no plausible reason right after he gets into town. It was head-scratch inducing, and the DEA agents are unreasonably hostile. There's some good humor here though, since Jericho is something of a wiseass.
I liked Jericho well enough despite his at-times confusing motives, and so far he hasn't crossed into unprofessional-professional territory with Wade, who was Jericho's teen love and now the town's main crook. Kayla seems nice and everything but we don't really get to see much of her. She's a tough sheriff but doesn't mind bending a few "minor" laws here and there. Wade is... well... a crook and it's questionable at this point just how cold-hearted or ruthless he is or isn't, though his criminal activity doesn't leave much wiggle room for me to form a good opinion of him. Nikki is a complicated character and I'm not sure what to make of her or her kids at this point either.