76-06-10 CBS Radio Mystery Theater Free the Beast

Plot
Furtive conversations take place between an unseen entity and a patient of a sanitarium for the insane. A freak accident triggers a chain of events that lead to the discovery of her horrifying family secret.
Episode
0490
Air Dates

First Run - June 10, 1976
Repeat - September 26, 1976

Actors

Paul Hecht
Marian Seldes
Joan Lovejoy
Ian Martin