When escalating political tensions between the United States and England put his son, Gary, in the hands of a man with a shadowy and intensely personal agenda, Cotton Malone finds himself confronting a baffling historical mystery that questions the legitimacy of Elizabeth I.

A mysterious manuscript discovered in the tomb of Charlemagne sends Cotton Malone on a perilous international quest that takes him and twin sisters with their own agenda from an ancient German cathedral to the harsh, unforgiving world of Antarctica in pursuit of the truth about the death of his father on a classified sub mission beneath Antarctica.

The Knights of the Golden Circle was the largest and most dangerous clandestine organization in American history. It amassed billions in stolen gold and silver, all buried in hidden caches across the United States. Since 1865 treasure hunters have searched, but little of that immense wealth has ever been found. Now, one hundred and sixty years later, two factions of what remains of the Knights of the Golden Circle want that lost treasure--one to spend...