Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Fallen Angel | 2020 | G.K. Parks | Buy |
| 2 | Calculated Risk | 2021 | G.K. Parks | Buy |
| 3 | Light Them Up | 2024 | G.K. Parks | Buy |
| 4 | Champagne Problems | 2025 | G.K. Parks | Buy |
The Cross Security Investigation series by G.K. Parks follows operatives at a private security firm handling dangerous cases. The series started with Fallen Angel in 2020 and has grown to four books, with Champagne Problems arriving in 2025.
Each book features high-stakes investigations that go beyond standard security work. The private sector setting allows Parks to put her characters in situations where the rules are different from law enforcement, adding a layer of moral ambiguity to the action.