Department Thirty (B Kent Anderson) Books in Order

Department Thirty is the early conspiracy-thriller run B Kent Anderson published under the name David Kent. The books are linked by a shadowy federal program that protects criminals and erases identities in exchange for high-value information. That setup gives the whole series a tense moral center. Nobody involved is clean, and almost everyone has to decide how much truth they can live with.

The first novel, Department Thirty, begins with Ryan Elder, who is still haunted by his parents' shocking double suicide. A letter in his mother's hand pulls him back to Oklahoma City and into a maze of old secrets, political violence, and government manipulation. It starts as a private wound and opens into a much larger conspiracy, which is a pattern Anderson uses well throughout the series.

From there the books widen instead of repeating themselves. The Mesa Conspiracy brings in Eric Anthony, a single father trying to understand the parents who left him, while Faith Kelly hunts a domestic terror mastermind. The Blackjack Conspiracy and The Triangle Conspiracy lean even harder into Faith's side of the world. She becomes one of the series' anchors, a tough former deputy U.S. marshal turned case officer who knows the system from the inside and never gets to stand comfortably outside it.

The cast shifts, but the pressure never does.

Across the four books, present-day crimes are tied to buried histories, family damage, and long-hidden networks of power. Anderson likes big plots, but he keeps them personal. Orphans, single parents, reluctant witnesses, compromised allies, and people carrying old grief all have to navigate institutions built on secrecy. The suspense comes from both sides at once, the looming public threat and the private cost of getting involved.

The setting helps a lot. Oklahoma City and the wider Oklahoma landscape give the series a regional identity that sets it apart from more generic government thrillers. Even when the action reaches into federal agencies, the books keep one foot in local history, local politics, and ordinary people trying to make sense of what has landed on them.

If you like conspiracy novels that grow into a shared world rather than following one hero forever, this series does that well. Read it in publication order, Department Thirty → The Mesa Conspiracy → The Blackjack Conspiracy → The Triangle Conspiracy. The through line is not just one character. It is the dangerous machinery behind the name Department Thirty, and the fallout it leaves wherever it reaches.