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“A pulse-pounding, down-the-rabbit-hole-tale where everyone has a secret... Be prepared to stay up very late; this book is worth it!”

- Lisa Gardner



A late-night accident on a San Francisco subway platform has altered Nat Idle's reality. But then, there are no accidents.

Disoriented and bloodied after a near-deadly fall onto the subway tracks, freelance journalist Nat Idle discovers that a beautiful stranger has come to his aid . . . and that the burly man who barreled into him had intended to do Nat harm. What he doesn't know is why—and his quest for answers leads him to uncover a handful of mysterious deaths, and a bizarre neurological disorder plaguing Bay Area children . . . as he ventures ultimately into the Cloud.

In a brave new world, the Cloud is where we store data, secrets, dreams. But it is something more—something insidious with the power to change not just how we interact with the world, but our behavior, and brains. Nat, in search of the truth, finds himself lost in a psychedelic maze, discovering things that cannot possibly be, realizing there is no one and nothing he can trust . . . not even his own mind.


Paperback: 432 pages

Publisher: Harper; Reprint edition (January 29, 2013)

Language: English

ISBN-10: 0061999709

ISBN-13: 978-0061999703


“A high-tech, mile-a-minute, lone-guy-against-the-world masterpiece.”

- Lee Child, New York Times bestselling author of the Jack Reacher series


“A blockbuster event. The Doomsday Equation blew me away.”

- James Rollins, New York Times bestselling author of The Sixth Extinction


“The strong setup and sharp elbows of ‘The Doomsday Equation’ prove that Richtel

has the potential to write a blockbuster.”

- New York Times Book Review


“Richtel’s journalistic background makes this nightmarish, incredible scenario,

chillingly believable and scary as hell.”

- Linwood Barclay, New York Times bestselling author


“Tantalizing. ... Engrossing. ... [A] race-against-the-clock suspense novel.”

- Publishers Weekly


“An adventure-filled race against time.”

- Booklist


“The Doomsday Equation is a first-rate thriller sure to keep readers mesmerized all the way to the last page.”

- Oklahoma City Oklahoman


“A race against time worthy of a Hollywood blockbuster.”

- Winnipeg Free Press


“One of our best thriller writers.”

- Connecticut Post


“Fast paced but well-plotted, cerebral, yet exciting, Matt Richtel’s latest is

the perfect antidote for those who miss the works of the late great Michael Crichton.”

- Mystery Scene

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