The Tombs (Fargo Adventure Series #4)

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 …