The Archimedes device.Throughout history, the protectors of its secrets have sacrificed their fortunes, their happiness, and even their lives. And when the device comes unexpectedly into the life of Rebecca Sanders, its effect is no less profound.Rebecca's journey begins with the unsettling disappearance of her mother, a respected Princeton professor. The only hints to her whereabouts are a series of clues left by an unknown scribe more than 500 years...