Whatever Happened to Madeline Stone?

The compulsive, glamorous and timely new novel from #1 bestselling author Louise O'Neill - coming soon and available to pre-order now!
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 . . .
PRAISE FOR LOUISE O'NEILL
'Darkly delicious' ELIZABETH DAY
'Fresh, glamorous, surprising' MARIAN KEYES
'Compulsive, brilliant' ABIGAIL DEAN
'Utterly gripping and unsettling' LUCY FOLEY
'An absolute page turner; addictive' CECILIA AHERN
'Unflinching, clever and completely riveting' FABULOUS
'An absolute must for your book club, with so many issues up for discussion' PRIMA
'A compelling, clever and beautifully crafted thriller' OBSERVER
'A smart, addictive page-turner' STYLIST

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.