Somehow, despite all of their successes, neither Escape nor Suspense was able to claim that they had produced "the scariest episode" from the golden age of American radio. That distinction belongs to the series Quiet, Please for their episode, "The Thing on the Fourble Board." It is still considered the best in radio horror.
Quiet, Please was an unusual fantasy/horror radio show that ran from 1947 to 1949 on ABC. The series was known for its masterful use of silence and for its unique style of story presentation. Like Escape, the show never had a regular sponsor and Quiet, Please bounced around in different time slots for most of its duration. The series lasted for 109 episodes and then disappeared. For many years only 12 recordings were known to exist among collectors, but that changed in the 1980's when more than 80 "lost" episodes became available to the public.
"The Thing on the Fourble Board" is an episode that will haunt you every time you see an oil derrick. The script for this episode, as well as every other episode of Quiet, Please, is available at www.quietplease.org.
(Image of oil drilling rig from Wikimedia Commons)