Whatever Happened to Madeline Stone?

Brought to you by Penguin.

The compulsive, glamorous and timely new novel from #1 bestselling author Louise O'Neill

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 2026 (P) Penguin Audio 2026