So Sure of Death: A Liam Campbell Mystery (Liam Campbell Mysteries)

Liam Campbell has lost more than most men lose in a lifetime: his wife and young son are dead - victims of a tragic accident; his budding career is in a deep freeze ever since five people died on his Anchorage watch. Demoted from sergeant to trooper, exiled to Newenham, a town teeming with fiercely independent Natives, he lives on a leaky gillnetter moored in Bristol Bay, brooding on how to put down roots on dry land again and rekindle his relationship with bush pilot Wyanet Chouinard, who won his heart long ago, and then broke it.
Then word arrives from Kulukak: The fishing boat Marybethia is adrift, victim of a shipboard fire. Flying out with Trooper Diana Prince, his new assistant and pilot, Liam arrives to find the horribly burned bodies of a family of local fishers and their crew. Was it a terrible accident? Or a cover-up of something worse?
At the same time, on a routine air-taxi run to a dig near Chinook Air Force Base, Wy discovers a young archaeological assistant, gruesomely murdered. And to make a perfect day complete, Liam's estranged father, Air Force Colonel Charles Campbell, flies into Newenham on assignment to the Chinook base. Even for Newenham, things are getting out of hand.
From Bill's Bar and Grill, where the local magistrate metes out her own brand of justice - Bristol Bay-style - to a remote northern shore where herds of walrus emerge from a sullen sea, Liam follows a trail of false leads, false confessions, and false hopes.