From the first page of Upgrade, its clear youre in the hands of a master storyteller; Blake Crouch leads you on a rollercoaster ride in this highly original science-fiction adventure thriller, by turns mysterious, fascinating and deeply moving - exploring the very nature of what it means to be human. Spellbinding. -- Alex Michaelides, #1 New York Times bestselling author of The Silent Patient and The Maidens Amazingly gripping and totally immersive. Brilliant (near-future) world-building and impeccable plot. You don't so much sympathize with the main character as live inside his skin. -- Diana Gabaldon, #1 New York Times bestselling author of the Outlander series Blake Crouch doesnt pull any punches in this taut and evocative examination of what humanity really isand how it fails us. Upgrade is a hugely entertaining and emotionally resonant thriller that youll be thinking about long after you turn the last page. -- Veronica Roth, #1 New York Times bestselling author of Chosen Ones and Divergent Blake Crouch has invented his own brand of page-turner fearlessly genre-bending, consistently surprising, and determined to explode the boundaries of what a thriller can be -- Karin Slaughter Blake Crouchs fantastic, mind-blowing philosophical thriller * Yahoo News * Blake Crouch is brilliant. His innovative novels never fail to grip! -- Sarah Pekkanen, bestselling co-author of The Wife Between Us Imaginative, perfectly paced, and extremely clever. UPGRADE walks the fine line between page-turning thriller and smart sci-fi. Another killer read from Blake. -- Andy Weir The incomparable Blake Crouch has, once again, completely blown my mind. Upgrade is more than a brain-bending thriller; its a siren in the night, warning us all of the dangers of playing God with the human species -- Justin Cronin, The Number One New York Times bestselling author of The Passage Trilogy Blake Crouch has a mind like Crichton and a heart like KingUpgrade is riveting, tense, scrupulously researched, and deeply heartfelt -- David Koepp, author of Cold Storage and screenwriter of Jurassic Park Upgrade is sleek and propulsive, a page-turner with unexpectedly beautiful passages that give you pause amid the thrills. * New York Times *