When Liz Kirschner discovers a musical map to Genghis Khan’s tomb, her scholarly life explodes into arson and gunfire. Grant Casey brings in his team for a race to the tomb—to prevent Chinese authorities from burying it forever. The hunt speeds from Cambridge, Massachusetts to Cambridge, England in search of clues—then flies to Inner Mongolia, bringing together a Mongolian singer, Grant’s ex-commanding officer and a Hong Kong billionaire with a secret past. Mongolian traditions clash with modern priorities in a high-stakes adventure to save one of the world’s greatest lost treasures.
When there’s a break-in at the tribal center on the reservation where he grew up, Grant flies home to Arizona only to find himself confronting white supremacists, Nazi eugenics and the tribal elder who refuses to speak his name: his own grandfather. Will Grant recover the most famous skeleton ever lost—or will he join the bones in their eternal rest?
The Bone Guard runs afoul of modern knights, ancient Assassins and the self-proclaimed King of Jerusalem, hell-bent on reclaiming his throne. Hired to safeguard a medieval manuscript, Grant and his wingman plunge straight into danger, chasing a killer, a thief, and an old adversary they know as the Phantom. Their client is lying, their objective is missing, and their reputation is on the line—along with their lives—as they hunt for clues in Turkish baths and ruined churches from Istanbul to the Dead Cities of Syria. Modern wars spark ancient rivalries, leaving Grant caught between the man who would be king, and the mystery shrouding his mechanical throne. The Templars are after Grant’s head, and the next target is the woman who ignited his heart. The Bone Guard is on the job and the legend’s about to get real.