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Hardcastle Books in Order
Below you'll find the complete list of Hardcastle books in publication order. This is generally the recommended reading order for the series.
Reading order verified: March 2026
Quick Answer
What order should I read the Hardcastle series? Start with "Hardcastle's Spy" (2004) and follow publication order through all 16 books.
The complete Hardcastle reading order is listed below in publication sequence.
Publication Order
Hardcastle's Spy
2004
Hardcastle's Armistice
2005
Hardcastle's Conspiracy
2005
Hardcastle's Airmen
2006
Hardcastle's Actress
2007
Hardcastle's Burglar
2008
Hardcastle's Mandarin
2009
Hardcastle's Soldiers
2010
Hardcastle's Obsession
2011
Hardcastle's Frustration
2012
Hardcastle's Traitors
2013
Hardcastle's Quartet
2014
Hardcastle's Collector
2016
Hardcastle's Runaway
2017
Hardcastle's Quandary
2019
Hardcastle's Secret Agent
2021
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