A mysterious mansion holds secrets and terror for the owner and visitors alike in this thriller based upon a classic stage play. Cornelia Van Gorder (Agnes Moorehead) has taken up residence in an old mansion that was the scene of some mysterious deaths years ago. The recent owner of the mansion was a banker who had embezzled money and had hidden it somewhere in the mansion but, he was killed before he was able to retrieve it. Now it appears that someone is stalking the mansion to find the money and protect its secrets.