THE #1 BESTSELLER IS BACK WITH HER BIGGEST THRILLER YET . . .

'A NAIL-BITER OF A THRILLER' SHARI LAPENA
'HYPNOTICALLY GOOD' LEE CHILD
'FEELS LIKE A BLOCKBUSTER MOVIE' LISA JEWELL
'A THRILLING, CHILLING GUT-PUNCH OF A BOOK' RED

You can save hundreds of lives.
Or the one that matters most . . .

The atmosphere on board the first non-stop flight from London to Sydney is electric. Celebrities are rumoured to be among the passengers in business class, and the world is watching the landmark journey.

Flight attendant Mina is trying to focus on the passengers, instead of her troubled five-year-old daughter back at home - or the cataclysmic problems in her marriage.

But soon after the plane takes off, Mina receives a chilling anonymous note. Someone wants to make sure the plane never reaches its destination. They're demanding her cooperation . . . and they know exactly how to get it.

It's twenty hours to landing.
A lot can happen in twenty hours . . .

'The queen of nail-biting suspense' IRISH INDEPENDENT

'A propulsive read - will have you questioning what would you do? at every turn' KARIN SLAUGHTER

'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 smart pay-off' THE TIMES, THE BEST THRILLERS FOR JUNE

'A banger of a book with a truly agonising what would you do?' RUTH WARE

'Why did no one warn me how bloody addictive it is?' TAMMY COHEN

'I got wrong-footed, then I got whiplash! Mind-blowing' SANDIE JONES

'I dare anyone to read this high-octane, tense thriller on a flight' PRIMA

'The year's most intriguing high-concept plot' DAILY EXPRESS

'Buckle up for some edge-of-your-plane-seat action' FABULOUS

'A stunning twist' LITERARY REVIEW

'Mackintosh has raised her game' PUBLISHERS WEEKLY STARRED REVIEW

'Heart-stopping' CRIME FICTION MONTHLY

'Addictive and gripping from the first to the last page' ***** READER REVIEW

'Sensational, the storytelling is next level' ***** READER REVIEW

'Best book of the year so far! Totally gripping' ***** READER REVIEW