Clive Cussler is the author or coauthor of more than fifty previous books in five bestselling series, including Dirk Pitt®, NUMA® Files, Oregon® Files, Isaac Bell, and Fargo. His most recent New York Times bestselling novels are The Race, The Storm, and Poseidon’s Arrow. His nonfiction works include Built for Adventure: The Classic Automobiles of Clive Cussler and Dirk Pitt, plus The Sea Hunters, and The Sea Hunters II; the latter two describe the true adventures of the real NUMA®, which, led by Cussler, searches for lost ships of historic significance. With his crew of volunteers, Cussler has discovered more than sixty ships, including the long-lost Confederate submarine Hunley. He lives in Arizona.

Thomas Perry is the highly acclaimed author of twenty novels, including the Edgar Award®–winning The Butcher’s Boy and the seven novels in the popular Jane Whitefield series, most recently Poison Flower. He has also been a writer and/or producer for several television series, including Simon & Simon, 21 Jump Street, and Star Trek: The Next Generation. He lives in Southern California.

Sam and Remi Fargo return in this astonishing new thriller from #1 New York Times bestselling author Clive Cussler—and embark on their most daring quest to date.

When an archeologist friend requests their help to excavate a top-secret historical site, the Fargos are intrigued. But they have no idea that their discoveries will set them on a hunt for a prize beyond all imagination.

The clues point to the hidden tomb of Attila the Hun, who was reportedly buried with a vast fortune of gold, jewels, and plunder: a bounty that has never been found.

As they follow a trail throughout Europe, it leads them not to one tomb, but five. The Fargos also find themselves pitted against a thieving group of treasure hunters, a cunning Russian businessman, and a ruthless Hungarian who claims direct descent from Attila himself—and will stop at nothing to achieve his destiny…

“Another adventure of nonstop, nerve-wracking suspense.”—Library Journal

“Cussler fans can expect more than a few hours of page-turning action.”—Kirkus Reviews