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Dervla McTiernan is an Irish award-winning and Internationally bestselling author of crime fiction novels.

Born in County Cork, Ireland, she attended the National University of Ireland, Galway, where she studied corporate law, and went on to practice as a lawyer for twelve years.

Dervla moved with her family to Western Australia following the effects of the global financial crisis.

Now a full-time author, Dervla lives in Perth, Australia with her beloved husband and two lovely children.

The Ruin, her debut novel and the first installment of the Detective Cormac Reilly Series published in 2018, was a top ten bestseller and an Amazon Best Book in July of the same year.

Dervla has been shortlisted for awards such as Barry Awards, Kate O’Brien Award, Australian Book Industry Awards, Irish Book Awards and Western Australian Premier Book Awards.

She is a member of the Sisters in Crime and Crime Writers Association.

More about Dervla McTiernan

Genres: Crime Suspense, Mystery, Suspense

Born: 1977

Ireland

Website: https://dervlamctiernan.com/

Non Series

  • The Murder Rule (2022)

Cormac Reilly

  1. The Sisters: A Cormac Reilly Prequel (2019)
  2. The Roommate: A Cormac Reilly Prequel (2019)
  3. The Ruin (2018)
  4. The Scholar (2019)
  5. The Good Turn (2020)

Detailed book overview

Non Series

The Murder Rule

First Rule: Make them like you.

Second Rule: Make them need you.

Third Rule: Make them pay.

They think I’m a young, idealistic law student, that I’m passionate about reforming a corrupt and brutal system.

They think I’m working hard to impress them.

They think I’m here to save an innocent man on death row.

They're wrong. I’m going to bury him.

Author: Dervla McTiernan
First Release: 2022
ISBN: 978-0063238664
Publisher: HarperLuxe

Cormac Reilly

The Sisters: A Cormac Reilly Prequel

Two sisters climbing the ranks of Dublin’s criminal justice system. A murder case that could change their lives forever. The Sisters is a gripping new thriller from one of the most exciting voices in crime fiction.

In this prequel to the international bestseller The Ruin, set 10 years prior, bright-eyed Carrie Ryan is at the very start of her career. When she has a hunch about an ongoing murder investigation, she knows it could be her only chance to prove herself and truly break into the “boy’s club” of Dublin’s police force.

Carrie uncovers this make-or-break moment in a case file her sister Aifric, a newly qualified barrister, leaves on their kitchen counter: Robert Collins has been charged with the murder of his girlfriend after a fight in a local pub, and all signs point towards a guilty verdict. But both sisters quickly begin to find evidence that complicates the story.

All the while, Carrie is very aware that she’s crossed the line – if the detective sergeant running the investigation finds out she’s been messing around with his case, her career will be over before it has begun.

Author: Dervla McTiernan
First Release: 2019
Ebook: B07W8XWK23
Publisher: Audible Originals
The Roommate: A Cormac Reilly Prequel

This audio novella is a stand-alone prequel to the Cormac Reilly series.

Twenty-two-year-old Niamh Turley thought she had problems dealing with the obnoxious principal of the school she's teaching in as well as the anxious parents of her little charges, but when she wakes one morning to a missing roommate and a garda knocking on her door, her life spirals out of control fast....

Author: Dervla McTiernan
First Release: 2019
ISBN: 978-1713565918
Publisher: Audible Studios
The Ruin

It's been twenty years since Cormac Reilly discovered the body of Hilaria Blake in her crumbling Georgian home. But he's never forgotten the two children she left behind...

When Aisling Conroy's boyfriend Jack is found in the freezing black waters of the river Corrib, the police tell her it was suicide. A surgical resident, she throws herself into study and work, trying to forget - until Jack's sister Maude shows up. Maude suspects foul play, and she is determined to prove it.

DI Cormac Reilly is the detective assigned with the re-investigation of an 'accidental' overdose twenty years ago - of Jack and Maude's drug- and alcohol-addled mother. Cormac is under increasing pressure to charge Maude for murder when his colleague Danny uncovers a piece of evidence that will change everything...

Author: Dervla McTiernan
First Release: 2018
ISBN: 978-0143133124
Publisher: Penguin Books
The Scholar

When Dr. Emma Sweeney stumbles across the victim of a hit-and-run outside Galway University early one morning, she calls her boyfriend, Detective Cormac Reilly, bringing him first to the scene of a murder that would otherwise never have been assigned to him. 

The dead girl is carrying an ID that will put this crime at the center of a scandal--her card identifies her as Carline Darcy, heir apparent to Darcy Therapeutics, Ireland's most successful pharmaceutical company. Darcy Therapeutics has a finger in every pie, from sponsoring university research facilities to funding political parties to philanthropy--it has even funded Emma's own ground-breaking research.

As the murder investigation twists in unexpected ways and Cormac's running of the case comes under scrutiny from the department and his colleagues, he is forced to question himself and the beliefs that he has long held as truths. Who really is Emma? And who is Carline Darcy?

Author: Dervla McTiernan
First Release: 2019
ISBN: 978-0143133698
Publisher: Penguin Books
The Good Turn

Some lines should never be crossed.

Police corruption, an investigation that ends in tragedy, and the mystery of a little girl's silence -- three unconnected events that will prove to be linked by one small town.

While Detective Cormac Reilly faces enemies at work and trouble in his personal life, Garda Peter Fisher is relocated out of Galway with the threat of prosecution hanging over his head. But even that is not as terrible as having to work for his overbearing father, the local copper for the pretty seaside town of Roundstone.

For some, like Anna and her young daughter, Tilly, Roundstone is a refuge from trauma. But even this village on the edge of the sea isn't far enough to escape from the shadows of evil men.

Author: Dervla McTiernan
First Release: 2020
ISBN: 979-8200696345
Publisher: ‎Blackstone Publishing