Restless in the Grave by Dana Stabenow

In Restless in the Grave, Dana Stabenow brings together the main characters from both of her Alaska-based series, PI Kate Shugak and state trooper Liam Campbell. Liam is investigating the possible murder of the rich and ruthless Finn Grant. Unfortunately, his wife Wyanet is one of the suspects. Kate is asked to come in as an undercover investigator. She discovers that pretty much everyone who knew him had a motive for killing Finn Grant. Soon, she and her faithful companion, Mutt, (who's only half-wolf) are in danger as they get too close to uncovering some very dark secrets.

While Kate is out of town, her old nemesis Erland Bannister comes back into the picture. Which I'm sure is setting the scene for the next installment in this great series.

I personally have read only one of the Liam Campbell stories, so I can't really comment on those. But I do love the Kate Shugak series because she is so feisty, independent and intelligent. If you haven't read any of them--with their fascinating view of life in Alaska--start at the beginning with A Cold Day For Murder.