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 scramble to a secure laboratory and try to first 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
as Dr. Jeremy Stone
David Wayne
as Dr. Charles Dutton
James Olson
as Dr. Mark Hall
Kate Reid
as Dr. Ruth Leavitt
Paula Kelly
as Karen Anson
George Mitchell
as Jackson
Ramon Bieri
as Major Manchek
Peter Hobbs
as General Sparks
Kermit Murdock
as Dr. Robertson
Richard O'Brien
as Grimes
Eric Christmas
as Senator from Vermont
Mark Jenkins
as Lt. Shawn (Piedmont team)
