CBS Radio Mystery Theater – The Great Brain. ep956, 790221.

Title:The Great Brain (‘Jaques Futrell story’)
Plot:A high stakes gamble takes place when a certified genius wagers with a friend and a prison warden that he can free himself from an escape-proof cell using only his wits and logic.
Episode:0956
Air Dates: First Run – February 21, 1979
Repeat – August 16, 1979

Read more at: CBS Radio Mystery Theater | Episode 956 | The Great Brain.