Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Undisclosed | 2012 | Jon Mills | Buy |
| 2 | Retribution / Decoded | 2014 | Jon Mills | Buy |
| 3 | Clandestine / One | 2014 | Jon Mills | Buy |
The Undisclosed Trilogy kicked off Jon Mills’ fiction career in 2012. The three books follow a conspiracy thriller arc involving classified government programs and the people who stumble into their orbit. The story builds from the opening revelations in Undisclosed through escalating danger in Retribution and Clandestine.
Mills wrote these early novels in a stripped-down thriller style that would become his trademark. The trilogy appeals to readers who enjoy government conspiracy fiction with a focus on action over technical detail. While the books preceded The Debt Collector in publication, they established the fast-paced approach that Mills would refine in his later, more successful series.