The compulsive and conversation-starting new book club novel from #1 bestselling author Louise O'Neill!'A glamorous, sexy, fascinating read about damaged people and what really happens to child-stars' - Marian Keyes, internationally bestselling author of Again, Rachel2002.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 . . .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'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'