The Sealed Room

The Sealed Room (1909) produced by the Biograph Company and directed by D. W. Griffith
It's the story of a rich Count, who builds a private room so that he can be with his lovely wife, undisturbed by others. It's a large, concrete room - with only one door. But one day, he finds her being unfaithful to him in that very room, with a minstrel. What happens next is taken from The Cask of Amontillado …