From the New York Times bestselling author of Dark Matter and the Wayward Pines trilogy comes a relentless thriller about time, identity, and memory—his most ambitious, mind-boggling, irresistible work to date. “An action-packed, brilliantly unique ride that had me up late and shirking responsibilities until I had devoured the last page . . . a fantastic read.”—Andy Weir, #1 New York Times bestselling author of *The Martian* Memory makes reality. That’s what New York City cop Barry Sutton is learning as he investigates the devastating phenomenon the media has dubbed False Memory Syndrome—a mysterious affliction that drives its victims mad with memories of a life they never lived. Neuroscientist Helena Smith already understands the power of memory. It’s why she’s dedicated her life to creating a technology that will let us preserve our most precious moments of our pasts. If she succeeds, anyone will be able to re-experience a first kiss, the birth of a child, the final moment with a dying parent.