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About The Book

“I couldn't stop reading! Absolutely a triumph!” —Freida McFadden, New York Times bestselling author of The Housemaid

From the internationally bestselling author of Strange Sally Diamond comes a twisted suspense novel about two sisters and the scandal that changes their lives forever.


If my sister hadn’t been beautiful, none of it would have happened.

Sixteen-year-old Ruby and her older sister Erin live comfortably in their Boston home with their pastor father and Irish mother, until one day Ruby is involved in an incident with Erin’s boyfriend, Milo, that causes her family to implode. Ruby and her mother leave in a hurry for Ireland, while Erin and her father stay behind.

As the story alternates between Erin and Ruby’s perspectives over decades, two very different women emerge. Erin struggles with trust issues. Ruby is set on a course of self-destruction.

When the truth threatens to emerge from this “brilliantly dark and tangled web” (Graham Norton), the sisters’ lives may be upended all over again. Can either of them ever truly recover from the events of that day in 1999?

Reading Group Guide

The Truth About Ruby Cooper Reading Group Guide

As a teenager Ruby is envious of her sister, Erin. Can you understand what’s behind it? And how might their parents have managed Ruby’s envy, if they noticed it?

To what extent does the family’s conservative background shape Ruby’s personality and play a role in what unfolds?

Ruby is young when she makes a decision that will change many people’s lives forever. Does her sexual encounter in Bible Camp shortly before the incident let her off the hook? How responsible should a sixteen-year-old be held for their actions?

If you were Ruby’s mother, what would you have done when Ruby revealed the true story of the incident?

Before the incident, what did you think of Ruby’s parents' marriage? And afterwards? Could they have navigated the fallout from the incident differently?

Erin’s life is upended by the incident. Do you understand how she reacts, both immediately afterwards and in the life choices she makes subsequently?

To what extent do Ruby’s actions in later life – in recovery, in her marriage and as a mother – throw a fresh light on the events in Boston? Is her behaviour as an adult caused by the fallout from the incident, or do her later actions suggest something fundamental about her mental wiring that’s been there from the start?

What are your thoughts on the book’s ending? How do you see the key characters’ lives unfolding after the events of the book?

About The Author

Steve Humphreys/Mediahuis

Before becoming a full-time writer, Liz Nugent worked in film, theatre, and television. Her five novels—Unravelling Oliver, Lying in Wait, Skin Deep, Our Little Cruelties, and Strange Sally Diamond—have each been #1 bestsellers and she has won five Irish Book Awards, as well as the James Joyce Medal for Literature. Her books are sold in more than forty countries around the world. She lives in Dublin. Visit her at LizNugent.com or follow her on Instagram @LizNugentWriter.

About The Readers

Product Details

  • Publisher: Simon & Schuster Audio (September 1, 2026)
  • Runtime: 11 hours and 30 minutes
  • ISBN13: 9781668165522

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