But she's seen the killer's face, and he's seen hers - and he won't rest until he's eliminated the last witness to his crime .

In this compelling and utterly addictive thriller, bestselling author Sharon Bolton gives us a fascinating look at the extreme lengths people will go to in desperation, whatever their situation. Perfect for fans of Lisa Jewell, Cara Hunter and Karin Slaughter, it's a dark and decidedly spine-tingling thriller that will get right under the skin.

'Bolton is a gripping storyteller with fine, haunted characters' -- Peter James
'For once, the description "impossible to put down" is full merited, for this is an absolute page-turner' -- Daily Mail
'It grips from the start . The plot merges skilfully, with many splendid twists along the way' -- The Times
'Bolton establishes a forbidding atmosphere . A slippery, devious narrative in which things are not always what they seem' -- Crime Scene
'Just wow! The best psychological thriller I have read in a long time!' -- ***** Reader review
'I couldn't put it down!' -- ***** Reader review
'Entertaining and a real page turner' -- ***** Reader review
'THIS BOOK IS THE BEST BOOK I have EVER read.a MASTERPIECE' -- ***** Reader review
'Essential reading right here' -- ***** Reader review
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SHE'S SEEN THE KILLER'S FACE. BUT HE'S ALSO SEEN HERS.

Just before dawn in the hills near the Scottish border, thirteen passengers on a hot-air balloon flight witness a brutal murder. Within the next hour, all but one of them will be dead.

Alone, scared and trusting no-one, she flees for her life, running to the one place she feels safe.

But the killer won't rest until he's eliminated the last witness to his crime .