Not a bad episode at all. Takes advantage of the medium of radio to bring us face to face with a living cave-man, but doesn't descend into the trite melodrama that often afflicts this type of plot.

(If this was a movie from the same period, one of the scientists would have had a daughter who would have been carried away by the "monster" ! I remember Michael Crichton's novel Terminal Man in which it is specifically stated they can't shoot at the killer because of the radiation hazard; in the movie version they blaze away merrily at him with no such restrictions.)

A good example of how you can do such a story much more easily on radio. I played this for a friend who is becoming interested in old radio shows and she was quite impressed. 