


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
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

Ken Swofford
Toby (technician)

Frances Reid
Clara Dutton

Richard Bull
Air Force Major

John Carter
MP Capt. Morton

Glenn Langan
Cabinet Secretary (uncredited)
Robert Wise
Nelson Gidding
Released