AN EARTH-SHATTERING SECRET. A LONG-LOST KEY. A LETHAL PURSUIT... One letter. Multiple revelations. The fate of humanity hangs in the balance... After a mysterious letter summons Adrian West and Nick Harper...

A LOST CITY. AN ANCIENT CONSPIRACY. A DEADLY COUNTDOWN... The lost city of Atlantis could hold the key to humanity's annihilation... When a cryptic papyrus is stolen from a museum in Athens, Adrian West...

A LEGENDARY WEAPON. AN ANCIENT BROTHERHOOD. A DEADLY DECEPTION... The legend was real. Now humanity's fate hangs in the balance... When priceless artifacts vanish while being transported to the British...

THE SECRET OF AN ANCIENT QUEEN. A PRICELESS TREASURE. A RACE AGAINST TIME... After arriving in Rome for a conference, Adrian West, ex-FBI agent turned professor, discovers that her friend and colleague,...