Not the movie, actually. I’ve never seen it. Just the poster/novelization cover.
As I’ve blogged here before and am too lazy to look up right now, there were lots of “children are evil” and/or “kids are just gonna get kidnapped and die anyway, so why bother?” movies around when I was growing up in the 60s and 70s.
Of course, this all has something to do with The Pill and Roe v Wade etc but again, more coffee is needed before I get into that…
