True Blue K-9 Unit (Shirlee McCoy) Books in Order

Part ofShirlee McCoy Books in Order

See the True Blue K-9 Unit books by Shirlee McCoy in order, with quick summaries, series background, and an easy place to start.

Last updated: July 4, 2026

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True Blue K-9 Unit (Shirlee McCoy) books in publication order

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Sworn to Protect

by Shirlee McCoy

2019

A K-9 officer and his dog stand between a vulnerable witness and the people hunting her. As the case tightens, protection turns into trust, and trust may be the only way they survive.

True Blue K-9 Unit (Shirlee McCoy) books in chronological order

Sworn to Protect
by Shirlee McCoy
2019True Blue K-9 Unit, Book 1

Series background & context

True Blue K-9 Unit is built around police officers, their canine partners, and the strong bond inside a unit where everyone depends on everyone else. The books lean urban rather than rural, and that changes the rhythm in useful ways. Cases move through busy streets, crowded neighborhoods, and public spaces where danger has plenty of places to hide.

The series still delivers the classic K-9 pleasures, trained dogs doing real work, handlers reading situations fast, and suspects who underestimate both. But it also puts a little more emphasis on the blue-family feeling that comes from officers working closely together over time.

The dogs may be brave, but the handlers have to trust each other too.

McCoy's Sworn to Protect fits comfortably in that world, with a witness in danger and a lawman under pressure to keep her safe. That blend of immediate threat and personal duty is central to the whole series.

If you want fast police suspense with canine partners and a strong team backdrop, True Blue K-9 Unit is an easy fit. It is dependable, action-forward, and built around the idea that protection is never a solo job.