2002.

Twin sisters Madeline and Chelsea Stone are joint stars of the AtomicKids sitcom Double Trouble, but everyone knows it’s Maddie who shines most brightly. Until Chelsea beats her sister out for the role of a lifetime and is catapulted into the spotlight. And just as Chelsea’s star reaches impossible new heights, Maddie disappears.

2025.

Chelsea Stone retired from acting after her sister’s disappearance – but living life under the radar is easier said than done when you’re the most famous woman of your generation.

When a storage locker is found containing heart-breaking truths about the year Maddie went missing, Chelsea feels a flicker of hope for the first time in twenty years. This is her chance to discover what really happened to her twin, but to follow the trail she’ll have to face the past and step back into the spotlight . . .

'A glamorous, sexy, fascinating read about damaged people and what really happens to child-stars' MARIAN KEYES

'Utterly addictive. Her best book yet' ANDREA MARA

'Unflinching, devastating and gripping whilst masterfully weaving hope and courage in its aftermath' NIKITA GILL

'Razor-sharp and utterly spellbinding' CATHERINE DOYLE

'Confronting, compulsive and profound' SOPHIE WHITE

'Addictive, propulsive and deliciously enraging' DAISY BUCHANAN

'I devoured the book in two sittings - with so many talking points, it's destined to be a book club hit' HANNAH BERCKERMAN

'Y2K is back, baby! I love this woman Louise O'Neill and just wish she wrote twice as fast' ⭐ ⭐ ⭐ ⭐ ⭐

'An excellent, page-turning story' ⭐ ⭐ ⭐ ⭐ ⭐

'If there’s one author who guarantees an instant TBR reshuffle, it’s Louise O'Neill . . . A thought-provoking, unputdownable read' ⭐ ⭐ ⭐ ⭐ ⭐

'Fans of Taylor Jenkins Reid will love this. I can't recommend it highly enough. Simply superb! All hail Queen Louise!' ⭐ ⭐ ⭐ ⭐ ⭐

'Wow! A phenomenal read from a superb writer that cannot be missed' ⭐ ⭐ ⭐ ⭐ ⭐

A glamorous, sexy, fascinating read about damaged people and what really happens to child-stars. * Marian Keyes, bestselling author of MY FAVOURITE MISTAKE *
Razor-sharp and utterly spellbinding, WHATEVER HAPPENED TO MADELINE STONE? boldly cracks open the glittering world of child stardom and, in O’Neill’s uniquely compelling style, lays bare the dark and reaching cost of fame. Questions of identity and destiny underpin this thrilling tour-de-force, which will stay with you long after the final page. I absolutely devoured it! * Catherine Doyle, bestselling author of TWIN CROWNS *
An unflinching examination of the destruction wrought by fame. Part Me Too thriller, part family tragedy. It reckons with our celebrity-obsessed culture and confronts our dark impulse to consume and then destroy women in the spotlight. Confronting, compulsive and profound * Sophie White. author of Such A Good Couple and Where I End. *
Addictive, propulsive and deliciously enraging - and a vital, healing text for anyone who came of age during post Y2K weirdness. Louise writes about modern womanhood with such elegance and fury. It's a truly excellent novel, and one which will make so many of us feel so seen. * Daisy Buchanan, bestselling author of INSATIABLE *
Utterly addictive. Easily one of my favourite books of the year. A standout novel, with Louise O’Neill’s inimitable storytelling style making it impossible to put down. I adored it. Her best book yet. * Andrea Mara, bestselling author of NO ONE SAW A THING *
This tale of child stardom is equal parts unflinching, devastating and gripping whilst masterfully weaving hope and courage in its aftermath. There aren’t enough words to express how in awe I am of the character arcs, the world building, the way the story felt so prescient whilst delving into the dark underbelly of Hollywood’s past. * Nikita Gill, bestselling author of HEKATE *
Propulsive and unflinching, O'Neill dissects the world of child stars, familial dysfunction and manipulative relationships with such clarity and compassion it's impossible not to be drawn into the world of her characters. As an examination of the way women in the public eye were - and still are - treated, it's both an important and timely novel. I devoured the book in two sittings - with so many talking points, it's destined to be a book club hit * Hannah Beckerman, author of THE FORGETTING *
An absolute masterpiece and shows one of our best living novelists at the height of her powers. It is equal parts compulsive and profound, thrilling and heart-rending, pacy and absolutely beautifully written, incisive and poetic . . . This novel is a powerful mediation on fame, shame and misogyny as well as family, girlhood and, most of all, sisterhood. I loved every single page and can confidently say it’s the best novel I’ve read in a very long time. * Lucia Osborne-Crowley, author of THE LASTING HARM *
A must-read for everyone who lived through the not-so-glorious days of the mid noughties gossip blogs and tabloid circles of shame. An evocative, captivating story rooted in twisted nostalgia, but so modern, so sharp, so enthralling. It’s a triumph * Vicki Notaro, author of REALITY CHECK *

Louise O’Neill is a bestselling author from Clonakilty, West Cork. Her debut novel, Only Ever Yours, won multiple awards including the Sunday Independent Newcomer of the Year and the inaugural YA Book Prize. Her second novel, Asking For It, spent 52 consecutive weeks in the Irish top 10 and was awarded the Michael L Printz honour by the American Library Association.
She has since published The Surface Breaks, a feminist retelling of The Little Mermaid, which was shortlisted for the Specsavers National Book Awards, and three novels for adults: Almost Love, After the Silence — named Crime Novel of the Year at the Irish Book Awards 2020 — and Idol, which went straight into the Irish book charts at #1. Her memoir, A Bigger Life, is coming in autumn 2026. Whatever Happened to Madeline Stone? is her latest novel.