Desolation highway - James R. Coggins

When two bodies are found in the forest near the Yellowhead Highway in
northern British Columbia, Sergeant Wesson and other members of the local detachment
of the Royal Canadian Mounted Police begin searching for a serial murderer. Suspects
include a woodsman who makes wildlife sculptures using a chainsaw, an antisocial
doctor, a strange woman engaged in occult practices, and a group of Native youth
addicted to gasoline sniffing. As more dismembered bodies turn up, John Smyth, editor
of Grace magazine in Winnipeg, visits the area and starts putting pieces
of the puzzle together.