When a Crystal Skull is discovered beneath the Pyramid of the Sun in Mexico, it ignites a cataclysmic chain of events that maroons SG-1 on the dying world of Xalotcan, a brutal society, steeped in death and sacrifice, where the bloody gods of the Aztecs demand tribute from a fearful and superstitiou[...]

When a series of gruesome murders are uncovered around the world, the trail leads back to the SGC - and far beyond...Recalled to Stargate Command, Dr. Elizabeth Weir, Colonel John Shepard, and Dr. Rodney McKay are shown shocking video footage - a Wraith attack, taking place on Earth. While McKay, Te[...]