Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | The Rational Faculty | 2019 | Gregory Ashe | Buy |
| 2 | Police Brutality | 2020 | Gregory Ashe | Buy |
| 3 | Santa: A Cultural Hegemony | 2020 | Gregory Ashe | N/A |
| 4 | Transactional Dynamics | 2020 | Gregory Ashe | Buy |
| 5 | Wayward | 2020 | Gregory Ashe | Buy |
| 6 | The Keeper of Bees | 2020 | Gregory Ashe | Buy |
| 7 | Off Duty Volume 2 | 2020 | Gregory Ashe | N/A |
A Union of Swords picks up the Hazard and Somerset story after the first seven books, pushing both the cases and the relationship into more complex territory. The Rational Faculty (2019) opens this phase, and the series runs through seven books including Police Brutality, Transactional Dynamics, and The Keeper of Bees.
The title suggests conflict and partnership in equal measure, which describes both the detective work and the personal dynamics. Ashe continues to balance procedural mystery with relationship development, keeping the series compelling for readers invested in both elements.