Creatures of the night... 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 Sheppard, and Dr. Rodney McKay are shown shocking video footage - a Wraith attack, taking place on Earth. While McKay, Teyla, and Ronon investigate the disturbing possibility that humans may harbor Wraith DNA, Colonel Sheppard is teamed...