Douglas Preston and Lincoln Child are the co-authors of the Pendergast series of thrillers, including such bestselling titles as Fever Dream, The Book of the Dead, The Wheel of Darkness, and Relic, which became a number one box office hit movie.

Douglas Preston's solo novels include the New York Times bestsellers Impact, Blasphemy, The Codex, and Tyrannosaur Canyon. His nonfiction book The Monster of Florence is being made into a film starring George Clooney.

Lincoln Child is the author of Utopia, Death Match, Deep Storm, and Terminal Freeze.

"Preston and Child carry off this sequel with great energy and panache. In particular, their portrait of the underground dwellers lifts this thriller into a category all its own." --Chicago Tribune

"Reads like a summer roller-coaster flick." --Philadelphia Inquirer

"The sequel to the popular Relic hits all the right buttons for those looking for thrills and chills from things that go bump in the night.... Another page-turner that cries out for translation to the silver screen." --The Orlando Sentinel