I've never heard of this film before today
I'm a big fan of old Sci-Fi films. I thought this one was interesting because it made me think of 'Village of the Damned' (1960) & 'Children of the Damned' (1964). Sort of the next set of children in the saga. Sort of off kilter a little in the telling of the story but I liked it as much as the other two which I own on DVD.