Storyline:
In 1973, the first manned expedition to Mars is marooned; by the time a rescue mission arrives, there is only one survivor: the leader, Col. Edward Carruthers, who appears to have murdered the others! According to Carruthers, an unknown life form killed his comrades during a sandstorm. But the skeptical rescuers little suspect that "it" has stowed away for the voyage back to Earth...

Cast:

Marshall Thompson Col. Edward Carruthers

Shirley Patterson Ann Anderson

Ann Doran Mary Royce

Dabbs Greer Eric Royce

Paul Langton Lt. James Calder

Medium: Original DVD,

Loaned: No

Aspect ratio: 1.85:1