I'm a sucker for old time radio dramas, and one of my favorite of these is "Inner Sanctum". This film borrows only the title from the series; the story is an original, and while the premise -- about a man on the run after accidentally killing his girlfriend and hiding out in a boarding house that just happens to belong to the mother of the boy who witnessed the murder -- would have made an effective half hour episode, it loses tension and the suspense lags even with its short 62 minute running time.
The always-reliable Lew Landers brings his usual craftsmanship to the direction, which is unobtrusive but effective. Charles Russell and Mary Beth Hughes make for bland leads, with the best performances coming from the supporting cast which includes Nana Bryant, Lee Patrick, Billy House and Roscoe Ates (here minus his trademark stutter). An average little suspense thriller; fans should stick to the radio program.