THE EMOTIONAL, JAW-DROPPING SUNDAY TIMES BESTSELLING THRILLER.AND DON''T MISS CLARE''S NEW BOOK OTHER PEOPLE''S HOUSES - OUT NOW.''Hypnotically good'' LEE CHILD''Jaw-dropping twists'' LUCY FOLEY''The book of the summer'' SUNIt''s twenty hours to landing. A lot can happen in twenty hours . . .You''re on board the first non-stop flight from London to Sydney. It''s a landmark journey, and the world is watching. Shortly after take-off, you receive a chilling anonymous note.There are people on this plane intent on bringing it down - and you''re the key to their plan.You''d never help them, even if your life depended on it.But they have your daughter . . . So now you have to choose.DO YOU SAVE HUNDREDS OF LIVES? OR THE ONE THAT MATTERS MOST?''Feels like a blockbuster movie'' LISA JEWELL''The queen of nail-biting suspense'' IRISH INDEPENDENT''A nail-biter of a thriller'' SHARI LAPENA''A rip-roaring finale'' GUARDIAN''Propulsive - will have you questioning "what would you do?" at every turn'' KARIN SLAUGHTER''Mackintosh is a pro'' NEW YORK TIMES''Taking the locked room mystery to a new, white-knuckle extreme, this is electrifying'' HEAT''When Clare Mackintosh goes high concept, she doesn''t mess around'' LINWOOD BARCLAY''An incredibly tense read that has a satisfyingly clever ending'' GOOD HOUSEKEEPING''A thrilling rollercoaster of a story. It''ll leave you breathless'' JANE FALLON''A smart pay-off'' THE TIMES, THE BEST THRILLERS FOR JUNE''A tense, convincing, nail-biter of a thriller'' ADELE PARKS, PLATINUM MAGAZINE''A banger of a book with a truly agonising "what would you do?"'' RUTH WARE''A thrilling, chilling gut-punch of a book'' RED''Why did no one warn me how bloody addictive it is?'' TAMMY COHEN''I dare anyone to read this high-octane, tense thriller on a flight'' PRIMA''I got wrong-footed, then I got whiplash! Mind-blowing'' SANDIE JONES''The year''s most intriguing high-concept plot'' DAILY EXPRESS''Full of mystery, tension and emotion. An incredible thriller'' ALLIE REYNOLDS''Buckle up for some edge-of-your-plane-seat action'' FABULOUS