The Mutual Radio Network ran this series from 1950-52. It was the first Sci-Fi radio program on the air at the time. Soon, NBC began airing "Dimension X" which got higher ratings. In this episode a scientist has developed a machine that can cause small animals, like insects, to grow much, much larger... He goes to a conference to tell other scientists what he has invented and leaves his wife home alone. She is convinced by the young man who brings her groceries, to let him go in her husband's laboratory to see some of the insects... and then the "fun" begins! This will be in the "Horror/Suspense" playlist.