Department Thirty is a series of thriller novels by American author David Kent (B. Kent Anderson). The main protagonist is a radio journalist named Ryan Elder, who finds himself investigating the story of his career at the start of the series.

The Department Thirty series began in 2003 with the title novel. The series has presumably ended after the fourth novel, The Triangle Conspiracy, published in 2006. Below is a list of David Kent’s Department Thirty books in order of when they were originally released (which is also their chronological order):

Publication Order of Department Thirty Books


Department Thirty(2003) Best Hardcover PriceBest Paperback PriceBest Kindle Price
The Mesa Conspiracy(2004) Best Hardcover PriceBest Paperback PriceBest Kindle Price
The Blackjack Conspiracy(2005) Best Hardcover PriceBest Paperback PriceBest Kindle Price
The Triangle Conspiracy(2006) Best Hardcover PriceBest Paperback PriceBest Kindle Price

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