It! The Terror from Beyond Space
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...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, ... Read more
Starring Marshall Thompson, Shirley Patterson, Kim Spalding, Ann Doran, Dabbs Greer, Paul Langton, Robert Bice, Richard Benedict, Richard Hervey, Thom Carney
It's a science-fiction and horror movie, and has a rating of 6 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from Sweden.