DUDE I SO REMEMBER THIS. ITS BEEN BUGGING THE HELL OUTTA ME THAT NOBODY REMEMBERS THIS. Anywho, i did the same as you and went on a neverending hunt with no results, the best thing i found outta it is that Harold Carter has a son who currently is still alive. I'm not too sure if he would know anything regarding the film but his name on twitter is Harold A Carter Jr. It's really bizarre how there's absolutely no media or screenshots regarding it , which is scary because i remember the plot of the episode clear as day.