Order of Book Series
0

Ian Caldwell Books in Order

Ian Caldwell has written 2 books, published between 2004 and 2015. The first book is The Rule of Four (2004) and the newest is The Fifth Gospel (2015). Publication order is the reading order below.

Books
2
Published
2004–2015
Confirmed
2 of 2 titles
Total pages
831 across 2 books
See all 2 books in order Printable Ian Caldwell checklist

Two books make up Ian Caldwell's catalogue. The Rule of Four, co-authored and published in 2004, sets college students and a male friendship against the Renaissance text Hypnerotomachia Poliphili. The Fifth Gospel followed in 2015, turning on the Catholic Church, its clergy, relics and the apocryphal gospels. Caldwell is an American novelist born in 1976, and no third book is recorded.

How many Ian Caldwell books are there?

Ian Caldwell has 2 books, released between 2004 and 2015.

Ian Caldwell Books in Publication Order

The table lists all 2 Ian Caldwell 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.

  1. Cover of The Rule of Four by Ian Caldwell, book 1 of the Ian Caldwell Standalone Novels series (2004)
  2. Cover of The Fifth Gospel by Ian Caldwell, book 2 of the Ian Caldwell Standalone Novels series (2015)
  1. 1
    The Rule of FourIan Caldwell Standalone Novels #12004 · 400 pages · confirmed 3/4
    2004400
    Buy at Amazon USAmazon UK
  2. 2
    The Fifth GospelIan Caldwell Standalone Novels #22015 · 431 pages · confirmed 3/4
    2015431
    Buy at Amazon USAmazon UK

Ian Caldwell books grouped by series

Each title below is a row in the publication-order table above. None of these groups has a reading-order page of its own on this site.

Ian Caldwell Standalone Novels

2 books

2 titles published under this heading without a numbered place in a series.

Do you have to read Ian Caldwell books in order?

No. No source lists any of the 2 Ian Caldwell books here as part of a series. The numbered table above gives them by publication date.

Where to start with Ian Caldwell

Start with The Rule of Four (2004), the earliest published title.

What is the newest Ian Caldwell book?

The Fifth Gospel (2015) is the newest Ian Caldwell book released so far.

Is there a new Ian Caldwell book coming?

No next Ian Caldwell book is announced in the catalogue, which is a gap in the listings it merges rather than a sign that the run has ended.

Ian Caldwell at a glance

No recent titles
The newest Ian Caldwell title on record dates from 2015, 11 years ago. No later title is catalogued.
Length
831 pages across all 2 books with a recorded length, a median of 416 pages each.

What the Ian Caldwell books are about

All 2 Ian Caldwell books carry subject tags in Open Library's catalogue. No subject is tagged on more than one of them, so each one below describes a single book. The subjects are cataloguers’ headings, not a plot summary.