Hardcastle Books in Order

This page lists the complete Hardcastle reading order by Graham Ison, with book numbers, publication years, and a publication-order view for readers who want to start at the beginning.

Updated 2026-06-22 / 16 books / 2004-2021

Hardcastle Reading Order

01 Hardcastle's Spy 2004 Buy

02 Hardcastle's Armistice 2005 Buy

03 Hardcastle's Conspiracy 2005 Buy

04 Hardcastle's Airmen 2006 Buy

05 Hardcastle's Actress 2007 Buy

06 Hardcastle's Burglar 2008 Buy

07 Hardcastle's Mandarin 2009 Buy

08 Hardcastle's Soldiers 2010 Buy

09 Hardcastle's Obsession 2011 Buy

10 Hardcastle's Frustration 2012 Buy

11 Hardcastle's Traitors 2013 Buy

12 Hardcastle's Quartet 2014 Buy

13 Hardcastle's Collector 2016 Buy

14 Hardcastle's Runaway 2017 Buy

15 Hardcastle's Quandary 2019 Buy

16 Hardcastle's Secret Agent 2021 Buy

Hardcastle Books by Publication Order

2004 Hardcastle's Spy #1

2005 Hardcastle's Armistice #2

2005 Hardcastle's Conspiracy #3

2006 Hardcastle's Airmen #4

2007 Hardcastle's Actress #5

2008 Hardcastle's Burglar #6

2009 Hardcastle's Mandarin #7

2010 Hardcastle's Soldiers #8

2011 Hardcastle's Obsession #9

2012 Hardcastle's Frustration #10

2013 Hardcastle's Traitors #11

2014 Hardcastle's Quartet #12

2016 Hardcastle's Collector #13

2017 Hardcastle's Runaway #14

2019 Hardcastle's Quandary #15

2021 Hardcastle's Secret Agent #16

Questions readers ask

What is the correct Hardcastle reading order?

The Hardcastle reading order on this page follows the numbered series order where available, with publication years shown beside each book.

How many Hardcastle books are there?

This catalog currently lists 16 Hardcastle books published across 2004-2021.

Who writes the Hardcastle books?

Hardcastle is listed as a book series by Graham Ison.

Should I read Hardcastle in publication order?

For most readers, publication order is the safest way to read Hardcastle. If a separate series order is available, this page shows that order first and publication years beside each title.

More by Graham Ison

Graham Ison books in order and complete bibliography ->

Source note: Sequencebooks organizes author, book, and series records from its catalog data. Publication years and series order are shown when available.