THE CUTTING EDGE

5 stars out of 5

What do I think of this book? It's complicated.

Mostly, I'm talking about the plot. It's sort of like hiking in the woods and, just when you think you see the end of the trail, it veers off in another direction. Bodies turn up on different street corners, motives and suspects change almost by the chapter and friends turn out to be enemies. All this action keeps police consultant and quadriplegic Lincoln Rhymes and his partner (on and off the job) Amelia Sachs on their toes - and me on the edge of my seat.

That's not to say the action is nonstop; in fact, there's plenty of detail here, in character development, technology and historical background (in other words, there's no shortage of evidence that the author has done extensive research). I'll admit that once in a while that drifted a little closer to the too much information line than I'd like, but on the other hand, I'm always open to getting educated on subjects I know little about.

In this case, it's primarily the diamond industry. In fact, that's where the complex story begins; in a Manhattan diamond-cutter's back-street shop, where the owner and a couple of customers are murdered in rather brutal fashion. An apparent witness - a young man who worked for the owner - somehow escapes, notifies the police and disappears into the wind. Lincoln and Amelia are called in (she, physically, and he, mentally from his technology-rich apartment). Together, they determine, surprisingly given the [diamond] setting, that robbery doesn't seem to be the motive.

Rather, the killer - dubbed the Promisor - was targeting the couple themselves (a conclusion reached when other couples are attacked in similar fashion). He - closed-circuit photos prove it's a man - apparently has some kind of kinky fixation with diamonds, making brides-to-be who boast rocks on the third fingers of their left hands high on his hit list.

Another angle involves construction of a geothermal energy facility, complete with a tie-in to local earthquakes, gas line ruptures and more deaths. Still another is the upcoming trial of a dangerous criminal Lincoln and Sachs helped to nail awhile back; now, though, he may find himself on the other side of the fence (not to mention in a sticky situation with police colleagues). Should you think that's enough for one book, just wait, there's more: A shaky relationship between the runaway apprentice, his set-in-his-traditional ways father and his girlfriend that's causing all kinds of trauma.

More than that I won't reveal, except to say that by the last page the loose ends are tidied up (well, most of them, anyway). And this: Congratulations on another 5-star entry in a stellar series!

The Cutting Edge by Jeffery Deaver (Grand Central Publishing, April 2018); 449 pp.