David Wolf is back, this time dealing with a pack of headless bodies pulled out of a (cold) lake, along with one body that's intact. The hear of the story is a cold case Wolf's father investigated decades ago: a missing man, then a missing wife, and a child left alone to fend for herself.
Wolf and his team investigate, pulling together disparate clues and talking to the only presumed survivor of the family with the missing parents: the young daughter (we do get, of course, the requisite way Carson introduces and describes all of his female characters: her looks and the fact that every guy would have no issue jumping in bed with her). There's a subplot about the looming vote to combine the resources off Wolf's county with another, and the (also of course) smarmy, evil sheriff of the neighboring county and his ever present henchman. There's also more dithering about Wolf getting back with his ex-wife.
----SPOILERS BELOW----
There are a lot of thing plowed into this story, and it's a lot to keep track of, especially when each story bangs into the page, pushing one of the other off. Patterson catches Wolf's ex-wife with another man in a diner; the evil sheriff of the other county gives Patterson a folder with pictures of Rachette supposedly helping a drug mule (after he ogles her body, again of course), there's a missing neighbor who lives on the property abutting the daughter's property, Wolf getting hammered in a bar, starting a fight there, and sleeping with the survivor daughter, a cliff to rappel, and just a bunch of other stuff. Really, it's too much story put into one book. The fact that it uses the evil twin trope is a real annoyance at the end of the book: the daughter isn't actually one person but two, and the killings are by the evil twin.
There's also yet another cliffhanger in this book, when Wolf's ex-wife and her guy (boyfriend?) are found shot to death in the guy's car. It isn't clear if it's designed this way, or that we're supposed to understand that the evil twin sister killed them. Either way, it's an unsatisfactory way to end the book.
If you don't like following three stories around in a book, have no interest in cold case style books (if you do, the Department Q books by Jussi Adler-Olsen are fantastic), or don't like cliffhangers or overused tropes, this is not the book for you. If you don't mind that, it's a good enough read.