Agent 21 Books in Order
Agent 21 by Chris Ryan contains 7 books, published between 2010 and 2016. The first book is Agent 21 (2010) and the newest is Endgame (2016). Publication order is the reading order below.
- Books
- 7
- Published
- 2010–2016
- Confirmed
- 7 of 7 titles
- Pages on record
- 1,680 in 5 of 7 books
- Reading time
- 28–42 hours
Reading time is an estimate, not a recorded figure: 1,680 pages at 300 words a page, read at 200–300 words a minute, covering the 5 of 7 titles with a page count on record.
Agent 21 is a young adult spy series by Chris Ryan. Zak Darke is the boy a secret organisation recruits, trains and sends out on missions abroad. Seven books make up the run: Agent 21 (2010), Reloaded (2012), Codebreaker (2013), The Wire (2013), Deadfall (2014), Under Cover (2015) and Endgame (2016). Codes and ciphers, terrorism and bombing investigations supply the plots.
How many Agent 21 books are there?
Agent 21 has 7 books, released between 2010 and 2016.
Agent 21 Books in Publication Order
The table lists all 7 Agent 21 books in the order they were published, with the release year, the page count where one is on record, and how many independent book listings confirm each title. Catalogue data as of September 2026.
- 1Agent 212010 · 320 pages · confirmed 3/420103203/4
- 2Reloaded2012 · confirmed 4/42012–4/4
- 3Codebreaker2013 · 320 pages · confirmed 4/420133204/4
- 4The Wire2013 · confirmed 3/42013–3/4
- 5Deadfall2014 · 352 pages · confirmed 4/420143524/4
- 6Under Cover2015 · 320 pages · confirmed 4/420153204/4
- 7Endgame2016 · 368 pages · confirmed 3/420163683/4
Is there a chronological order for Agent 21?
No separate chronological order is on record for Agent 21, because none of the book listings this catalogue draws on publishes one; the publication order above is the only order given.
Do you have to read Agent 21 books in order?
You should read the Agent 21 books in publication order, the order of the numbered table above. The catalogue does not record whether each Agent 21 book also stands alone.
Where to start with Agent 21
Start with Agent 21 (2010), the earliest published title.
What is the newest Agent 21 book?
Endgame (2016) is the newest Agent 21 book released so far.
Is there a new Agent 21 book coming?
No next Agent 21 book is announced in the catalogue, which is a gap in the listings it merges rather than a sign that the run has ended.
Agent 21 at a glance
- No recent titles
- The newest Agent 21 title on record dates from 2016, 10 years ago. No later title is catalogued.
- Release pace
- Agent 21 books have appeared about one a year on average.
- Length
- 1,680 pages across the 5 of 7 books with a recorded length, a median of 320 pages each.
- Busiest decade
- Most Agent 21 books, 7 of 7, were published in the 2010s.
- Corroboration
- 4 of the 7 titles appear in all four independent book listings, and every one of them in at least three.
What the Agent 21 books are about
6 of the 7 Agent 21 books carry subject tags in Open Library's catalogue. The subjects below are the ones that recur across them, most frequent first: adventure stories is tagged on 6 of 6. The subjects are cataloguers’ headings, not a plot summary.
- Adventure stories 6 of 6 books
- Children's fiction 5 of 6 books
- Young adult fiction 3 of 6 books
- Intelligence officers 2 of 6 books
- Spies 2 of 6 books
More books by Chris Ryan
The author page linked below lists every book in publication order.
- Chris Ryan books in order 76 books