Order of Book Series
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Cormac Reilly Books in Order

Cormac Reilly by Dervla McTiernan contains 6 books, published between 2018 and 2025. The first book is The Ruin (2018) and the newest is The Unquiet Grave (2025). Publication order is the reading order below.

Books
6
Published
2018–2025
Confirmed
6 of 6 titles
Pages on record
380 in 1 of 6 books
See all 6 books in order Printable Cormac Reilly checklist

Cormac Reilly is the recurring figure in Dervla McTiernan's police procedural series, set in Ireland and taking in Dublin. Six books run from The Ruin (2018) to The Unquiet Grave (2025), with The Scholar (2019), The Sisters (2019), The Good Turn (2020) and The Roommate (2020) between. Murder investigation, cold cases and betrayal carry the subject tags. A chronological order is recorded alongside the publication order, and the series is ongoing.

How many Cormac Reilly books are there?

Cormac Reilly has 6 books, released between 2018 and 2025.

Cormac Reilly Books in Publication Order

The table lists all 6 Cormac Reilly 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 Ruin by Dervla McTiernan, book 1 of the Cormac Reilly series (2018)
  2. Cover of The Scholar by Dervla McTiernan, book 2 of the Cormac Reilly series (2019)
  1. 1
    The Ruin2018 · 380 pages · confirmed 4/4
    2018380
    Buy at Amazon USAmazon UK
  2. 2
    The Scholar2019 · confirmed 3/4
    2019–
    Buy at Amazon USAmazon UK
  3. 3
    The Sisters2019 · confirmed 3/4
    2019–
    Buy at Amazon USAmazon UK
  4. 4
    The Good Turn2020 · confirmed 4/4
    2020–
    Buy at Amazon USAmazon UK
  5. 5
    The Roommate2020 · confirmed 4/4
    2020–
    Buy at Amazon USAmazon UK
  6. 6
    The Unquiet Grave2025 · confirmed 3/4
    2025–
    Buy at Amazon USAmazon UK

Cormac Reilly Books in Chronological Order

In story order, The Sisters comes first and The Unquiet Grave comes last. Chronological order follows the events inside the story rather than the release dates. The 6 books below run in that in-universe sequence.

  1. 3
    The Sisters2019 · confirmed 3/4
    2019–
    Buy at Amazon USAmazon UK
  2. 5
    The Roommate2020 · confirmed 4/4
    2020–
    Buy at Amazon USAmazon UK
  3. 1
    The Ruin2018 · 380 pages · confirmed 4/4
    2018380
    Buy at Amazon USAmazon UK
  4. 2
    The Scholar2019 · confirmed 3/4
    2019–
    Buy at Amazon USAmazon UK
  5. 4
    The Good Turn2020 · confirmed 4/4
    2020–
    Buy at Amazon USAmazon UK
  6. 6
    The Unquiet Grave2025 · confirmed 3/4
    2025–
    Buy at Amazon USAmazon UK

Do you have to read Cormac Reilly books in order?

You should read the Cormac Reilly books in publication order, the order of the numbered table above. The catalogue does not record whether each Cormac Reilly book also stands alone.

Where to start with Cormac Reilly

Start with The Ruin (2018), the earliest published title. In the chronological order, The Sisters comes first.

What is the newest Cormac Reilly book?

The Unquiet Grave (2025) is the newest Cormac Reilly book released so far.

Is there a new Cormac Reilly book coming?

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

Cormac Reilly at a glance

Still running
Cormac Reilly is still running, with a title published as recently as 2025.
Release pace
Cormac Reilly books have appeared about one a year on average.
Length
380 pages across the 1 of 6 books with a recorded length, a median of 380 pages each.
Busiest decade
Most Cormac Reilly books, 3 of 6, were published in the 2020s.
Corroboration
3 of the 6 titles appear in all four independent book listings, and every one of them in at least three.

What the Cormac Reilly books are about

2 of the 6 Cormac Reilly 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.

More books by Dervla McTiernan

The author page linked below lists every book in publication order.