The Charlemagne Pursuit

Cotton Malone has spent years outrunning his past, but some doors, once opened, refuse to close. When he finally pulls the classified files on his father's death—officially a submarine disaster, unofficially something far more disturbing—he finds himself drawn into a mystery that stretches from the frozen depths beneath Antarctica to the shadowy legacy of Nazi expeditions and the cryptic secrets buried inside Charlemagne's medieval tomb. Two sisters are chasing the same truth for their own volatile reasons, and what all of them are hunting may be something the world's most powerful forces have spent decades trying to erase. The personal and the conspiratorial collide here with unusual force, giving the thriller's high stakes an emotional weight that feels genuinely earned.

Berry writes with a historian's precision and a showman's timing, layering real archaeological history and Cold War secrecy into a narrative that moves with confidence. The Antarctic setting provides something rare in the genre—a sense of genuine isolation and dread. What distinguishes this installment from its predecessors is how thoroughly Cotton's internal journey shapes the external action, making each revelation feel like it matters beyond the plot. The research is worn lightly but felt on every page.