Name That Trauma:: Mike M. on an Old Lady U.F.O Prank

Hello, Kindertrauma!

I was hoping you could help me name a primordial trauma from my youth.

I'm trying to track down an episode of a TV show, maybe a made-for-tv movie. This would be from the mid-to-late 1960s, in color. The gist of it was that there were these two kids of about 12 or 13, sort of cruel versions of Spin and Marty, who were pranking an old lady who lived in a remote area into believing that she was being attacked by aliens and/or flying saucers. They used speakers to make weird sound effects and projectors to make weird lights. The old lady went into utter hysterics, and at one point was filling roasting pans full of boiling water to hurl at the invaders. Ring a bell? I thought it was an episode of Suspense Theatre, but I can't find mention of it in any of the online episode guides. Any clues helping me resolve this trauma? Thanks!

-Mike