Cerberus Tactical K9 Team Charlie Books in Order
Part ofFiona Quinn Books in OrderExplore the Cerberus Tactical K9 Team Charlie books in order by Fiona Quinn, with summaries, team background, and where to start.
Last updated: January 17, 2026
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Publication Order
4 books
Trusted Instinct
by Fiona Quinn
2025
Journalist Auralia Rochambeau thinks she is chasing a simple charity scam until it turns violent. Trapped by a brutal storm and a bridge collapse in rural Virginia, she relies on Marine Raider Honoré 'Creed' Duchamp and his K9 Rougarou to survive.
Shielding Instinct
by Fiona Quinn
2025
FBI brain security researcher Dr. Petra Armstrong heads to St. Croix with multiple K9 teams, and danger follows her there. Ex-Green Beret Hawkeye Kesse is supposed to keep her safe while they chase a criminal family, but Petra refuses to play damsel.
Sheltering Instinct
by Fiona Quinn
2024
WorldCares scientist Tess Dagomba is touring Namibia when she needs an emergency rescue, and the man who shows up is her first love. Former SEAL and K9 handler Levi Elliot has a dog to find and a woman to protect, whether she lets him or not.
Guardian's Instinct
by Fiona Quinn
2023
Australian commando Basil 'Halo' St. John relocates to Washington, D.C., to build a new Cerberus Tactical K9 team for Iniquus, with his dog Max at his side. A mission to save a family pulls in a fearless civilian, and the new team gets tested fast.
Series background & context
Cerberus Tactical K9 Team Charlie follows the formation and early missions of a newer Cerberus unit inside Fiona Quinn's connected Iniquus world. The books blend action, romance, and the practical work of building a team that can be trusted when everything goes wrong.
This is a team learning how to become a unit.
The series begins with Guardian's Instinct, which brings in Basil 'Halo' St. John, a newly retired Australian commando hired to lead the canine unit, and his K9 Max. The early story beats focus on first missions, new alliances, and the reality that leadership is hardest when the stakes are personal.
From there, the series widens. Sheltering Instinct takes the danger abroad and pairs a scientist in trouble with an Iniquus K9 handler whose history with her makes every choice sharper. Shielding Instinct leans into high-tech expertise and protective tension in St. Croix, with a heroine who refuses to be treated like a liability and a handler who has to keep up.
Trusted Instinct brings the action back to rural Virginia with a storm-driven survival setup, where a journalist and a Cerberus handler are forced to rely on each other when the environment collapses around them. Across the books, the K9s, Max, Mojo, Cooper, Rougarou, are treated as working partners, not scenery.
While each romance and mission resolves within its own book, reading in order gives you the best sense of the team's growth, the internal bonds, and the way different handlers fit into the larger Iniquus structure.
If you like K9 romantic suspense with a strong found-family feel, Team Charlie delivers. Expect competence, loyalty, and a lot of scenes where the safest decision still requires courage.
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