Classic 1950's B sci-fi! Re-runs used to scare me to death as a kid. (Did it stop me from watching it? No!) But having recently watched it as an adult, I noticed the 'hoard' of aliens were the same three guys zipping back and forth in the same tunnel which purported to be an underground 'complex of tunnels.' And don't forget that 'mutants' should be pronounced 'Mew-Tants' with equal emphasis on both syllables :-) The magic is gone when you spot the zippers in the alien costumes. Ah, but the memories... surreptitiously checking the back of my parent's necks for 'The Alien Mark!' I'm not even sure kids today would be scared by it but give it a try. Definitely has the feel of a cult classic :-) ( )