Ten years ago, in the sleepy little town of Burden, Virginia, a series of baffling abductions took place. Special agent in-charge Sam Marra had led the investigation, but neither the perpetrator, nor the victims were ever found. As the years passed, the vivid memory and humiliation of that experience became Sam Mara's ever-present companions...No one questions whether Sam is a good man, or a competent agent, it's just that since the Burden case, Sam has become a different man...But as fate would have it, he would get another chance...it could be his last. He failed to stop it once...Once is enough.