The Charlemagne Pursuit (Cotton Malone Series #4)

A powerful new international thriller featuring Cotton Malone, from New York Times bestselling author Steve Berry.

Cotton Malone knows that his father died when his submarine sunk in the north Atlantic in 1971, but not much else. Using his government contacts to discover the details behind his father’s demise, he learns that the sub was on a highly classified mission. And it turns out that the Nazis explored Antarctica by submarine a decade earlier than Americans, following …