When virtually all of the residents of Piedmont, New Mexico are found dead after the return to Earth of a space satellite, the head of the US Air Force's Project Scoop declares an emergency. A group of eminent scientists led by Dr. Jeremy Stone scrambles to a secure laboratory and tries first to isolate the life form while determining why two people from Piedmont - an old alcoholic and a six-month-old baby - survived. The scientists methodically study the alien life form, unaware that it has already mutated and presents a far greater danger in the lab, which is equipped with a nuclear self-destruct device designed to prevent the escape of dangerous biological agents.
Arthur Hill
Dr. Jeremy Stone
David Wayne
Dr. Charles Dutton
James Olson
Dr. Mark Hall
Kate Reid
Dr. Ruth Leavitt
Paula Kelly
Karen Anson
George Mitchell
Jackson
Ramon Bieri
Major Manchek
Peter Hobbs
General Sparks
Kermit Murdock
Dr. Robertson
Richard O'Brien
Grimes
Eric Christmas
Senator from Vermont
Mark Jenkins
Lt. Shawn (Piedmont team)
Peter Helm
Sgt. Crane (Piedmont team)
Joe Di Reda
Wildfire Computer Sgt. Burk
Carl Reindel
Lt. Comroe
