Saturday Is Old Radio Day: The Sealed Book - "Devil Island"

About The Sealed Book:

The Sealed Book was a radio series of mystery and terror tales, produced and directed by Jock MacGregor for the Mutual network. Between March 18 and September 9, 1945, the melodramatic anthology series was broadcast on Sundays from 10:30pm to 11:00pm.
Each week, after "the sound of the great gong," host Philip Clarke observed that the mysteriously silent "keeper of the book has opened the ponderous door to the secret vault wherein is kept the great sealed book, in which is recorded all the secrets and mysteries of mankind through the ages, Here are tales of every kind, tales of murder, of madness, of dark deeds strange and terrible beyond all belief."

From that short-lived series, here's "Devil Island" -