From a crystalline lab atop Mount Fuji to an island off of Hawaii teeming with what's been called the "dark matter of life," Sigma Force must solve a mystery going back eons, to when life first took root on this planet. Commander Grayson Pierce will have to do the unthinkable: team up with Sigma's greatest enemy-the newly resurrected Guild - even it if means sacrificing one of their own. Cutting edge science, historical mystery and pulse-pounding action.