Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Undiscovered | 2016 | Anna Hackett | Buy |
| 2 | Uncharted | 2016 | Anna Hackett | Buy |
| 3 | Unexplored | 2016 | Anna Hackett | Buy |
| 4 | Unfathomed | 2017 | Anna Hackett | Buy |
| 5 | Untraveled | 2017 | Anna Hackett | Buy |
| 6 | Unmapped | 2017 | Anna Hackett | Buy |
| 7 | Unidentified | 2018 | Anna Hackett | Buy |
| 8 | Unidentified: The Emerald Tear / The Emerald Butterfly | 2018 | Anna Hackett | N/A |
| 9 | Undetected | 2018 | Anna Hackett | Buy |
The Treasure Hunter Security series by Anna Hackett follows a team that protects archaeological treasures from those who would steal or destroy them. Starting with Undiscovered in 2016, the nine-book series sends its characters on adventures to recover and safeguard rare artifacts, with each book pairing a team member with a romantic interest.
The titles — Undiscovered, Uncharted, Unexplored, Unfathomed, Untraveled, Unmapped, Unidentified, and Undetected — hint at the sense of exploration that drives the series. Published between 2016 and 2018, it bridges Hackett’s science fiction work and her contemporary romantic suspense, offering adventure-romance set in real-world locations.