Alien 2 On Earth Movie (1980) Plot synopsis: A spaceship lands back on Earth after a failed mission, but the astronauts have been replaced by hideous creatures that can penetrate people's bodies and make them explode. A group of cave explorers are attacked by the monsters inside an underground cave, but the survivors are in for a surprise when they finally manage to escape the trap... Directors: Ciro Ippolito, Biagio Proietti Writer: Ciro Ippolito Stars: Belinda Mayne, Mark Bodin, Roberto Barrese