A deeper sleep / Dana Stabenow.

Enhanced descriptions from Syndetics:

In "A Deeper Sleep, " her first novel since "Blindfold Game, " the stand-alone political thriller that made Dana Stabenow a "New York Times" bestseller, Stabenow returns to the popular and award-winning Kate Shugak series. Kate, a private investigator, has been working on a case for the Anchorage District Attorney involving the murder of a young woman by her husband, a man named Louis Deem. Deem has been the subject of investigations before, and he's never been convicted of a crime. But Kate and her on-again, off-again lover, state trooper Jim Chopin, who arrested Deem, are convinced that this time it's different, and he'll finally be punished for his actions. When the jury returns a verdict of not guilty, Kate and Jim are devastated, and like the rest of the citizens of Niniltna, Alaska, certain that a man has gotten away with murder. They can't help but think that it's only a matter of time before he's in the frame for another killing. Sure enough, a few weeks later a shooting leaves two dead in an apparent robbery. But this time Kate and Jim have a witness, and they're not going to let Louis Deem get away again. Or will he? Dana Stabenow, Edgar Award-winning author and "New York Times" bestselling thriller writer, delivers a gripping page-turner about one town's search for justice--at any cost.