Out of the fifties 'B' Science-Fiction monster movies, this easily ranks as the best. It's most notable as the film that ALIEN is an unaccredited remake of, thus giving it a certain historical significance.The intriguing plot is about the rescue of the only marooned survivor (Col. Carruthers) of an ill-fated expedition to Mars. The authorities, pig-headed as usual, falsely assume that he murdered his fellow crew members, so that he'd have more provisions to survive; hence he is being brought back to Earth to face court-martial for murder. (There is also a somewhat interesting plot reversal here Most movies of this nature usually begin with the ship leaving Earth, enroute to its otherworld destination, while, in this case, the story is believed finished, and begins as the characters take-off from the other planet, returning to Earth). As the rescue ship is leaving Mars, a lurking, ominous shadow is seen in the lower compartment. (A frightening, atmospheric moment, accomplished through s