Having had a technically advanced device installed in his head, Harold J. Finley has the ability to cause electric storms to appear and eviscerate those that get in his way.
It's another very high quality, impressive episode, this one is pure science fiction, the story of an everyday man being pushed into extreme action by those around him.
This comes at a really interesting point in the career of the late, great Donald Pleasance, definitely a big star by this point, with an already illustrious list of performances, and he was terrific here, adding real sincerity to the part.
Ok, so when you see Harold Finley use his powers to lift the rock, you can see the strings lifting it up, but we are watching things on a much higher resolution, I'm sure many wouldn't have picked up on it at the time.
Once again they were ambitious with the special effects, they attempted to do something pretty bold, it was a fair effort.
Good story, elevated by the lead performance.
8/10.