The Sealed Room

In this movie suggested by Poe's "A Cask of Amontillado", The king constructs a cozy, windowless love-nest for himself and his concubine. However, she is not faithful to her sovereign, but consorts with the court troubadour. In fact, they use the king's new play chamber for their own lovecraft. When the king discovers this, he sends for his masons. With the faithless duo still inside, the masons use stone and mortar to quietly seal the only door to the vault... (imdb)