'Terrific... claustrophobic, surreal and dazzling' The Sunday Times'Fiendishly clever' David Goodman'This escapist mystery is out of this world!' Fabulous A frozen wilderness. A killer in the skies.

When aspiring travel writer Chloé Campbell is invited aboard a luxury airship flying to the North Pole, she thinks she’s bagged the opportunity of a lifetime. But she hasn’t had long to admire the dazzling icy views before a fellow passenger is found dead in their cabin. Trapped at the top of the world, the group agrees a tragic accident has occurred.

But as the hours tick by, fear turns to doubt. It seems everyone’s a suspect. And it isn’t long before the passengers begin to turn on each other .