Internationally bestselling Irish author Liz Nugent is back with The Truth About Ruby Cooper, a haunting new psychological novel exploring guilt, sisterhood, shame, and the long emotional aftermath of a single irreversible moment.

Known for critically acclaimed bestsellers including Strange Sally Diamond, Lying in Wait, and Unravelling Oliver, Nugent has built a reputation for crafting emotionally layered psychological fiction centred on deeply flawed and morally complex characters. A recipient of five Irish Book Awards and the James Joyce Medal for Literature, she is widely regarded as one of the leading voices in contemporary psychological suspense.

Set between Boston and Dublin, The Truth About Ruby Cooper follows sisters Ruby and Erin Cooper, whose seemingly idyllic childhood in a church community is shattered by one devastating incident that fractures their family forever. Decades later, carrying different memories and emotional scars, the sisters remain haunted by the past and the silence surrounding it.

Blending literary depth with slow-burning suspense, the novel examines family silence, emotional inheritance, and the difficult truths people bury to survive. The book arrives at a time when psychological fiction is increasingly shifting beyond conventional crime narratives to focus on emotional consequence, trauma, memory, and moral ambiguity.

The novel has already drawn strong praise from bestselling authors and literary figures. Freida McFadden called it “absolutely a triumph,” while Graham Norton described it as “a brilliantly dark and tangled web.” Shari Lapena praised the book as “an utterly gripping story about how one incident reverberates across time,” and Anthony Horowitz called it “utterly compelling and brilliantly imagined.”

Before becoming a full-time novelist, Nugent worked in film, theatre, and television. Her novels have consistently topped bestseller charts in Ireland and attracted a global readership for their psychologically rich storytelling and unsettling emotional realism.

The Truth About Ruby Cooper is expected to generate significant interest among readers of literary suspense and psychological fiction, as well as within broader conversations around emotionally driven contemporary storytelling.