A weapon designed to decimate the Roman Empire has just become the No.1 threat to the United States. Caught live on Al Jazeera in an off-the-books operation, Scot Harvath's career has been terminated. But when the tide in the War on Terror suddenly turns against the US, the president has no choice but to secretly enlist the help of the man the administration has just fired. Ducking a congressional subpoena, Harvath travels to the Mediterranean, where he learns of a shadowy organization that has been combing the earth for decades in search of the ultimate weapon to use against the USA and her allies. Now, after three summers of record-breaking heat across Europe, one steadily melting Alpine glacier has given up an ancient secret - one with the potential to thrust civilization back into the Dark Ages. From Cyprus, London and Paris, to Italy, Switzerland and Saudi Arabia, Harvath must race against the clock to stop one of the greatest evils ever to face the western world.