If you’re a fan of crime fiction that keeps you on the edge of your seat, Dervla McTiernan’s books are a must-read. This Irish author has taken the thriller world by storm with her atmospheric mysteries, complex characters, and heart-pounding plots. Best known for her Cormac Reilly series, McTiernan also delivers captivating standalone novels and novellas that showcase her storytelling prowess. Whether you’re new to her work or a devoted fan, this guide will walk you through Dervla McTiernan’s books in order, ensuring you experience her stories the way they were meant to be read.
In this SEO-friendly and reader-engaging blog post, we’ll cover her complete bibliography, including publication and chronological order, highlight key themes, and share why her books are perfect for mystery lovers. Let’s dive into the dark, twisty world of Dervla McTiernan!
Why Read Dervla McTiernan’s Books?
Before we get to the list, let’s talk about why McTiernan’s work stands out. A former lawyer in Ireland, she brings authenticity to her police procedurals, weaving intricate legal and investigative details into her narratives. Her stories are set against the evocative backdrop of Ireland, from Galway’s bustling streets to its haunting countryside. Her protagonist, Detective Cormac Reilly, is a flawed yet relatable hero whose personal struggles add depth to each case he tackles.
McTiernan’s books have won prestigious awards like the Ned Kelly, Barry, and International Thriller Writers Awards, and her debut novel, The Ruin, was selected as an Amazon Best Book of July 2018. With over 525,000 copies sold in Australia and New Zealand alone, her gripping tales have captivated readers worldwide.
Ready to start your journey? Below, we’ve organized her books by series and publication order, with tips on how to read them for maximum enjoyment.
List of Dervla McTiernan Books in Order

Below is a complete list of Dervla McTiernan’s books in order of release date, presented in table format. This includes her Cormac Reilly series, standalone novels, and novellas, based on available information.
| Title | Series/Novella | Release Date | Publisher |
|---|---|---|---|
| The Ruin | Cormac Reilly Series #1 | July 2018 | Penguin Books |
| The Scholar | Cormac Reilly Series #2 | March 2019 | Penguin Books |
| The Sisters | Cormac Reilly Prequel (Novella) | August 2019 | Audible Studios |
| The Roommate | Cormac Reilly Prequel (Novella) | May 2020 | Audible Originals |
| The Good Turn | Cormac Reilly Series #3 | March 2020 | HarperCollins |
| The Murder Rule | Standalone Novel | May 2022 | HarperLuxe |
| What Happened to Nina? | Standalone Novel | April 2024 | William Morrow |
| The Unquiet Grave | Cormac Reilly Series #4 | April 2025 | Not specified |
Dervla McTiernan’s Cormac Reilly Series in Order
The Cormac Reilly series is McTiernan’s flagship, following Detective Cormac Reilly as he navigates chilling crimes and personal challenges in Galway, Ireland. While each book offers a standalone mystery, reading them in order enhances the character development and overarching narrative. Here’s the complete list in both publication and chronological order (they align perfectly):
1. The Ruin (2018)
- Overview: McTiernan’s debut novel introduces Detective Cormac Reilly, who’s transferred to Galway from Dublin. He’s assigned a cold case from 20 years ago—the death of Hilaria Blake, a mother whose children, Maude and Jack, he can’t forget. When Jack’s death is ruled a suicide, his sister Maude suspects murder, pulling Cormac into a web of secrets.
- Why Read It?: A gripping blend of past and present, The Ruin sets the tone for the series with its emotional depth and twisty plot. It won the Ned Kelly Award for Best Debut Crime Fiction in 2019.
- Get Started: Perfect for fans of Tana French or Jo Nesbø.
2. The Scholar (2019)
- Overview: Cormac’s girlfriend, Emma, discovers a hit-and-run victim outside Galway University. The victim is an heiress to a powerful pharmaceutical company, and the case spirals into a high-stakes investigation. As scrutiny intensifies, Cormac’s methods are questioned.
- Why Read It?: This sequel ramps up the suspense and deepens Cormac’s personal life. It won the International Thriller Writers Award for Best Original Paperback Novel in 2020.
- Fun Fact: Critics praise its “smart and plausible” plot and “perfectly paced” twists.
3. The Good Turn (2020)
- Overview: Cormac faces corruption within the Galway police force while investigating a young girl’s abduction. Meanwhile, his colleague Peter Fisher uncovers a murder that threatens to expose dark secrets.
- Why Read It?: A morally complex tale that showcases McTiernan’s knack for weaving multiple storylines. It won the Barry Award for Best Paperback Original in 2022.
- Reader Tip: Fans love the “fascinating environment” and Cormac’s growth as a character.
4. The Unquiet Grave (2025)
- Overview: A body found in a Galway bog is initially thought to be ancient, but it’s revealed to be Thaddeus Grey, a school principal who vanished two years ago. The ritualistic mutilation of his body suggests a sinister motive, and Cormac struggles to connect the dots.
- Why Read It?: Released on April 30, 2025, this is the latest in the series, praised for its “masterful” blending of multiple storylines.
- Pro Tip: Don’t miss the atmospheric bog setting, a highlight for readers.
5. Untitled Cormac Reilly Book #5 (TBA)
- Overview: McTiernan has confirmed a fifth book in the series, but details are scarce. Stay tuned for updates!
- Why Read It?: Fans are eager to see where Cormac’s journey takes him next.
Reading Tip: While McTiernan notes that her books can be read out of order, starting with The Ruin offers the richest experience, as Cormac’s backstory unfolds gradually.
Cormac Reilly Prequel Novellas
McTiernan has also written two prequel novellas that explore Cormac’s early career. These can be read independently but are best enjoyed after The Ruin for context.
1. The Sisters (2019)
- Overview: A young Cormac investigates a murder case that tests his skills and moral compass. This audio novella is a quick, immersive listen.
- Why Read It?: A #1 bestseller in the U.S. for four weeks, it’s a great introduction to Cormac’s younger years.
- Format: Available primarily as an audiobook.
2. The Roommate (2021)
- Overview: Another early case for Cormac, this novella delves into a mysterious disappearance tied to a shared living space.
- Why Read It?: Perfect for fans craving more of Cormac’s backstory.
Dervla McTiernan’s Standalone Novels
Beyond the Cormac Reilly series, McTiernan has penned gripping standalone thrillers that showcase her versatility. Here’s the list in publication order:
1. The Murder Rule (2022)
- Overview: Inspired by a true story, this thriller follows Hannah, a law student working at the Innocence Project. Her quest to free a man convicted of murder uncovers shocking truths.
- Why Read It?: A New York Times Best Thriller of the Year, it’s a twisty, morally complex read currently in development for a screen adaptation.
- Perfect For: Readers who love legal thrillers like John Grisham’s.
2. What Happened to Nina? (2024)
- Overview: When Nina disappears after a trip with her boyfriend, her family demands answers. This standalone explores guilt, suspicion, and family dynamics.
- Why Read It?: Another New York Times Best Thriller of the Year, it’s lauded for its emotional intensity and is also being adapted for the screen.
- Quote: “A thing can be crystal clear with hindsight, but just about as clear as mud when you’re actually living it.”
Other Novellas by Dervla McTiernan
McTiernan’s novellas offer quick, suspenseful reads that complement her novels. Here’s the additional one to check out:
1. The Wrong One (2022)
- Overview: A standalone novella about a case that challenges perceptions of guilt and innocence.
- Why Read It?: Ideal for a fast-paced thriller fix.
Complete Dervla McTiernan Books in Publication Order
For those who prefer reading by publication date, here’s the full list, including novels and novellas:
- The Ruin (2018)
- The Scholar (2019)
- The Sisters (Novella, 2019)
- The Good Turn (2020)
- The Roommate (Novella, 2021)
- The Murder Rule (2022)
- The Wrong One (Novella, 2022)
- What Happened to Nina? (2024)
- The Unquiet Grave (2025)
Chronological Order for the Cormac Reilly Series and Prequels
If you want to follow Cormac’s timeline, read the prequel novellas first, then the main series:
- The Sisters (Prequel Novella)
- The Roommate (Prequel Novella)
- The Ruin
- The Scholar
- The Good Turn
- The Unquiet Grave
Where to Start with Dervla McTiernan’s Books
- For New Readers: Begin with The Ruin to meet Cormac Reilly and dive into the series.
- For Standalone Fans: Try The Murder Rule or What Happened to Nina? for self-contained thrills.
- For Short Reads: Check out The Sisters or The Wrong One for a quick dose of suspense.
Why Fans Love Dervla McTiernan
Readers rave about McTiernan’s ability to craft “taut, tense, and darkly addictive” stories. Her background in law adds realism, while her vivid Irish settings transport you to another world. Fans on Goodreads and Book Notification praise her for creating “unputdownable” books that blend suspense with emotional depth.
Here’s what readers are saying:
- “There are not many books that will keep me reading from start to finish, but Dervla McTiernan’s The Ruin did just that.”
- “Cormac Reilly is one of the best fictional detectives in books today.”
Where to Buy Dervla McTiernan’s Books
You can find McTiernan’s books at major retailers like Amazon, Booktopia, and HarperCollins Australia. Many are available in paperback, eBook, and audiobook formats. Check your local library for copies, as fans note they’re popular there! For the latest releases, visit her official website or sign up for her newsletter at dervlamctiernan.com.
What’s Next for Dervla McTiernan?
With The Unquiet Grave just released in April 2025, fans are buzzing about the future of the Cormac Reilly series. McTiernan has hinted at a new book featuring DS Carrie O’Halloran, a recurring character, set for publication in 2021, though updates are pending. Her standalone thrillers continue to gain traction, with screen adaptations in the works for The Murder Rule and What Happened to Nina?.
Final Thoughts
Dervla McTiernan’s books are a treasure for crime fiction fans, offering richly crafted mysteries and unforgettable characters. Whether you’re hooked on Cormac Reilly’s investigations or intrigued by her standalone thrillers, reading her books in order ensures you don’t miss a single twist. Start with The Ruin and let McTiernan’s storytelling pull you into her dark, compelling world.
Which Dervla McTiernan book is your favorite? Share your thoughts in the comments below, and More books you can read about Mary Balogh Books, Jane Harper Books, Faith Martin Books and more. happy reading!

