* FROM THE AUTHOR OF SUNDAY TIMES CRIME BOOK OF THE MONTH, BREATHLESS, COMES A SPINE-TINGLING AND GRIPPING NEW THRILLER, NOW AVAILABLE FOR PRE-ORDER! * Praise for Amy McCulloch: 'A high-altitude, high-stakes thriller. I loved it' MATT HAIG 'Had me on the edge of my seat. A must read' SARAH PEARSE 'Suffocatingly tense, highly original and exhilarating' DAILY EXPRESS 'Tense, chilling and terrifying' CLAIRE DOUGLAS 'An addictive, tightly plotted thriller that will leave you chilled to the bone' LUCY CLARKE 'Chilling, vivid and entirely unique' ABIGAIL DEAN 'A real page-turner. Tense, terrifying and fascinating in equal measure' CATHERINE COOPER 'A truly terrifying thriller with a tense and twisty plot. Superbly executed' ALLIE REYNOLDS