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Department of Thirty Books in Order
Below you'll find the complete list of Department of Thirty books in publication order. This is generally the recommended reading order for the series.
Reading order verified: April 2026
Quick Answer
What order should I read the Department of Thirty series? Start with "Department Thirty" (2003) and follow publication order through all 4 books.
The complete Department of Thirty reading order is listed below in publication sequence.
Publication Order
Department Thirty
2003
The Mesa Conspiracy
2004
The Blackjack Conspiracy
2005
The Triangle Conspiracy
2006
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