THE EMOTIONAL, JAW-DROPPING SUNDAY TIMES BESTSELLER FROM THE NO.1 BESTSELLING AUTHOR. DON'T MISS CLARE'S NEW BOOK THE LAST PARTY - OUT NOW.It'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?