Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Agent-in-Training | 2017 | Shirlee McCoy | Buy |
| 2 | Guardian | 2017 | Shirlee McCoy | Buy |
| 3 | Sheriff | 2017 | Shirlee McCoy | Buy |
| 4 | Special Agent | 2017 | Shirlee McCoy | Buy |
| 5 | Bodyguard | 2017 | Shirlee McCoy | Buy |
| 6 | Bounty Hunter | 2017 | Shirlee McCoy | Buy |
| 7 | Classified K-9 Unit Christmas | 2017 | Shirlee McCoy | N/A |
| 8 | Tracker | 2017 | Shirlee McCoy | Buy |
The Classified K-9 Unit series adds a covert-operations angle to the K-9 formula, with eight books all published in 2017. The titles — Agent-in-Training, Guardian, Sheriff, Special Agent, Bodyguard, Bounty Hunter, and Tracker — describe the different roles the K-9 handlers fill.
The “Classified” prefix distinguishes this from the other K-9 unit series and hints at operations that go beyond standard law enforcement.