Still reeling from the events of last year, the Roswell aliens and their allies are drawn back together through a threat from a familiar stranger and a murder that has not yet happened. From near and from far, amidst breakups, reunions, scientific advancements and the impending death of someone they hold dear, our heroes must grapple with two central questions: Who enters our lives and defines who we are? And what power do we really have over our own futures? Make contact with ROSWELL, NEW MEXICO in Season Three.