The Mystery of the Old Parish House (2000)

In this movie (based on a true story) within a movie, a director tries to film the tale of an old KGB activist living in a parish house. In the summer of 1941 the activist tortured and killed Latvians in the cellar of the house. Although the old man hires others to brick over the cellar door, the murdered people keep coming through the stones and never leave him in peace. Unbeknownst to the film makers, the "real" KGB activist, now an aged drunk, is milling about the film set. Moreover, the director and lead actor are competing for the love of the lead actress, and the film's producer wants the director to re-shoot parts of the movie.

Unfortunately the movie The Mystery of the Old Parish House is not yet available on HBO Max.