Hell Swarm

The Nephilims (aliens who lived on Earth before man) have infected the bodies of hundreds of humans. The Nephilims want to reclaim what they consider to be their world. A secret government agency are the only ones aware of the Nephilims existence and plans. It is composed of officially deceased persons. Its new recruit is named Billy Sabbath, a ex-cop convict to the capital punishment for the murder of his colleague George Bernard, an alien. His real execution being disguised, he is saved by the organization...