Stabenow, Dana. Kate Shugak series.

Everyone knew Len Dreyer, a handyman for hire in the Park near Niniltna, Alaska, but no one knew anything else about him. Even Kate Shugak hired him to thin the trees on her 160-acre homestead and was planning to ask him to help build a small second cabin on her property for Johnny Morgan, a teenaged boy in her care. But she, the Park's unofficial p.i., seems to have know less about him than anyone. Alaska is a place where anybody can bury his history and start fresh, and for any reason, but this particular mystery comes to light when Len Dreyer turns up murdered. His body is discovered,frozen solid, in the path of a receding glacier with the hole from a shotgun blast in his chest. No one even knew he was missing, but it turns out he's been missing for months