Classified K-9 Unit Books in Order

Part ofTerri Reed Books in Order

This page shows the Classified K-9 Unit books by Terri Reed in order, with quick summaries, series background, and where to start reading.

Last updated: June 8, 2026

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Publication Order

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2 books

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Agent-in-Training

by Terri Reed

2017

FBI intern Zara Fielding and her K-9 partner, Radar, stumble into a robbery gone wrong and wind up in the criminals' sights. It is a brisk prequel that drops readers straight into the Classified K-9 world.

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Guardian

by Terri Reed

2017

When an FBI agent is kidnapped and a protected witness disappears, agent Leo Gallagher follows the trail to Wyoming. There he finds a single mother tied to the case, and a threat that is only getting closer.

Series background & context

Classified K-9 Unit is the FBI branch of the K-9 world, and the books lean into that bigger federal scope. These are elite agents with highly trained dogs, moving through kidnapping cases, protected witness problems, robberies, and investigations that can stretch across states.

The unit setup is part of the fun.

Because the team is specialized, the stories can move quickly without spending much time proving why these characters belong in dangerous situations. They already do. That lets the books focus on the actual case, the dog work, and the personal costs that come with federal-level danger.

The romances are still close and character driven. Single parents, young agents, interns, or people pulled into witness cases end up working side by side with professionals who are used to staying guarded. Reed's contribution captures that nicely, with a capable heroine, an eager dog, and trouble arriving before anyone is ready for it.

If you like your suspense a little bigger in scale, but still anchored by trust, teamwork, and brave canine partners, Classified K-9 Unit is an easy series to recommend.