Department Thirty Books in Order
See the Department Thirty books by B Kent Anderson in order, with short summaries, reading order, series background, and where to start with this thriller series.
Last updated: July 11, 2026
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Department Thirty books in publication order
4 books
Department Thirty
by B Kent Anderson
2003
Years after his parents' shocking double suicide, Ryan Elder receives a battered letter in his mother's hand with one phrase, Department Thirty. Returning to Oklahoma City, he uncovers a secret government network, old betrayals, and a looming act of domestic terror.
The Mesa Conspiracy
by B Kent Anderson
2004
After his dying cousin leaves him a last cryptic message, single father Eric Anthony starts digging into the parents who abandoned him. His search collides with Faith Kelly's pursuit of a domestic terror mastermind and leads straight to Department Thirty.
The Blackjack Conspiracy
by B Kent Anderson
2005
Pregnant musician Alex Bridge is accused of embezzlement and murder, and Faith Kelly offers her protection in exchange for the truth. What looks like a corporate crime opens into a much older conspiracy with roots in Oklahoma Territory.
The Triangle Conspiracy
by B Kent Anderson
2006
Case officer Faith Kelly is used to protecting dangerous people in exchange for information, but a murdered senator's daughter drags her into something far more personal. As her brother disappears, a bombing and an old conspiracy close in around Oklahoma City.
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