"A blistering, high octane thrill ride to the brink of humanity's extinction. Nicholas Sansbury Smith plunges the reader right into the middle of the action, alongside a cast of unforgettable characters, as they fight tooth and nail to survive one impossible mission after another-to stop an extinction level virus. The Extinction Cycle series is post-apocalyptic, military science fiction at its best. Highly addictive!"―Steven Konkoly, USA Today bestselling author
"Fast-paced military action meets cool, cutting-edge science. Extinction is no longer a Darwinian battle of the fittest. It's a race for survival."
―E. E. Giorgi, author of Chimeras on The Extinction Cycle
"Extinction Horizon is a roller coaster ride of fear and adrenaline that you will not want to put down. Nicholas Sansbury Smith once again separates himself from the masses with a brilliantly entertaining post-apocalyptic thriller."
―W. J. Lundy, author of Only the Dead Live Forever on The Extinction Cycle