Pacific Northwest K-9 Unit (Terri Reed) Books in Order

Part ofTerri Reed Books in Order

Find the Pacific Northwest K-9 Unit books by Terri Reed in order, with brief summaries, series background, and guidance on where to begin.

Last updated: June 8, 2026

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Explosive Trail

by Terri Reed

2023

A serial bomber's attack in Olympic National Park leaves K-9 officer Willow Bates injured and vulnerable. Her estranged husband, FBI agent Theo Bates, steps in to protect her and the baby he never knew about.

Series background & context

Pacific Northwest K-9 Unit uses one of Terri Reed's home turf strengths, a region of forests, wet weather, mountain roads, and national-park beauty that can turn dangerous fast. The books center on working dogs and law enforcement professionals who know the terrain, but still have to fight both human threats and the limits of the landscape.

The region gives the series its mood.

This is a greener, rougher version of romantic suspense, with park trails, remote roads, heavy trees, and storms shaping what the characters can do. The dogs are critical in that environment, whether the case involves tracking, searching, or protecting civilians who are suddenly caught in an active threat.

Reed's entry brings in an especially sharp mix of personal and procedural stakes, using a bomber case and an estranged couple to keep both sides of the story moving. That is a good example of what the series does well, external danger, regional atmosphere, and relationships tested under strain.

If you want K-9 suspense with a strong outdoors feel and a Pacific Northwest backdrop that genuinely changes the story, this series delivers.