“Provocative and scary, there’s an utter realism that leaps from every page. You’ll find yourself not only savoring a peek into the psyche, but one into the future as well.” —Steve Berry, New York Times bestselling author of The Jefferson Key

“Here is a thriller that is as cutting-edge as the keenest scalpel, written by a young neurosurgeon and expert on brain-computer interfaces. The action is fast and furious, even as the novel grapples with some of the deepest and most disturbing questions in medicine, computing, and the nature of consciousness.” —Douglas Preston, New York Times bestselling author of Impact

“A terrifying journey into the promise and peril of artificial intelligence. You’ll never look at a computer chip the same way again.” —J.E. Fishman, bestselling author of The Dark Pool

“Leuthardt puts his expertise as a neurosurgeon to good use in his impressive debut.” —Publishers Weekly

“Leuthardt describes a world that others have imagined wherein humans have chosen to ‘upgrade’ by adding computer interfaces to their brains . . . but he adds his own spin with neuroscience and computing details. . . . Fans of the intersection between hard science and wetware should relish this tale.” —Library Journal