NEW YORK TIMES BESTSELLER • “If Michael Crichton had written a superhero novel, it would look a lot like Upgrade.”—The New York Times Book Review
“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
 
“Mysterious, fascinating, and deeply moving—exploring the very nature of what it means to be human.”—ALEX MICHAELIDES, #1 New York Times bestselling author of The Silent Patient and The Maiden
ONE OF THE BEST BOOKS OF THE YEAR: Time, She Reads
The mind-blowing new thriller from the New York Times bestselling author of Dark Matter and Recursion—currently in development as a motion picture at Steven Spielberg's Amblin Partners
“You are the next step in human...