Monster of the Mists

Titan, largest of Saturn's moons, is forever shrouded in a deadly mist of poisonous methane gas and ammonia, and dotted with treacherous swamps and countless other hidden dangers. No world in the solar system is less inviting. Flying through Titan's mists on its way to Saturn, Johnny Cypher's ship develops radio trouble, so Johnny decides to land. While Johnny and Rhom are repairing the antenna, a titanosaurus appears out of the mist and attacks.