Episode is proof if it were ever needed that you should never make a movie with kid lead actors.
This episode is shockingly bad, no need to worry about the alien monsters, there would be plenty humans who would love to see this lot vanish in a mysterious incident!
Acting is borderline rubbish, storyline is something from Enid Blyton than an alien invasion sci-fi story.
Overall series premise isn't all bad, but the famous 5 (or 6 or whatever it is) kids add nothing to the story whatsoever beyond they are irritating beyond belief and they've been written in for tokenism.
I mean the young girl has specs which have zero prescription, which means there a prop but for what reason, there is no reason as far as I can see!