Synopsis: In the bleak, not too distant future, renegade Boston cop Cameron Grayson must track down a brutal rapist. The attacker, identified as Adrian Dunn, was exposed to a mutagenic contaminant at a lunar prison methane-breathing life form. Dunn is infecting his victims with a lethal retrovirus. His deadly task is to prepare the Earth for habitation by a dominating alien race. Now, with the heroic assistance of the Center for Disease Control's Dr. Kirbie younger and armed with an arsenal of weapons, Black Shield Grayson must overthrow his deadly nemesis in order to save the city - and perhaps the entire world.