From #1 bestselling author of IDOL comes an addictive new book club mystery, perfect for fans of DAISY JONES AND THE SIX and I'M GLAD MY MOM DIED

'A glamorous, sexy, fascinating read about damaged people and what really happens to child-stars' - Marian Keyes, internationally bestselling author of Again, Rachel

**THE INSTANT IRISH TIMES BESTSELLER!**

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. But 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, is she ready to face the past and step back into the spotlight?

Praise for Whatever Happened to Madeline Stone?

'Utterly addictive. Her best book yet' - Andrea Mara, Sunday Times bestselling author of All Her Fault

'Unflinching, devastating and gripping whilst masterfully weaving hope and courage in its aftermath' - Nikita Gill, bestselling author of Hekate

'Razor-sharp and utterly spellbinding' - Catherine Doyle, Sunday Times bestselling author of The Dagger and the Flame

'Confronting, compulsive and profound' - Sophie White, award-winning author of My Hot Friend

'Addictive, propulsive and deliciously enraging' - Daisy Buchanan, bestselling author of Insatiable

'I devoured the book in two sittings - with so many talking points, it's destined to be a book club hit' - Hannah Beckerman, bestselling author of The Forgetting

‘This is O’Neill at her best, combining compelling characters and plot with incisive commentary on fame, power and men’s bad behaviour’ RED

‘Emotional and compelling, the story exposes the cost of celebrity, and how ambition and scrutiny can shape – and destroy – family bonds’ WOMAN & HOME

‘Addictive and nostalgic, this one’s perfect for group chats and book clubs’ HEAT

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

'It’s a gripping mystery that doesn’t shy away from the darker side of Hollywood and I loved it!' ⭐ ⭐ ⭐ ⭐ ⭐

'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' ⭐ ⭐ ⭐ ⭐ ⭐

'Will I ever meet a Louise O’Neill book I won’t give 5 stars to? I don’t think so!' ⭐ ⭐ ⭐ ⭐ ⭐