THE SQUEAKING DOOR INNER SANCTUM MYSTERY, WORKSHOP OF BLOOD AND HORROR, SPECIALIZES IN WHOLESALE MURDER TUNE IN SUN. 8:30 P.M. E.W.T. (BLUE) When Inner Sanctum Mystery was only a few weeks old, a woman listener sent a can of oil to the producer, Himan Brown . Said she did not mind the blood and ghoulishness of the program, but that darned door sent shivers down her spine. That was intentional, of course, and it is unnecessary to add that nothing has been done about oiling the ghostly hinges since the program was born, January 7, 1941. It is estimated that fifteen million spines are chilled by the blood-curdling slaughter that takes place weekly on this terror-show. It began with an accidental thought that occurred to Producer Himan Brown while he was browsing around the sound effects shop for unusual backgrounds to incorporate in another of his programs. He happened upon a terrifyingly squeaking door, made a mental note to use it some day, and did when asked b