The Mystery of Oberwald (1980)

One long, painful decade after the brutal assassination of her husband, a reclusive queen comes face-to-face with the deceased's doppelgänger, fugitive anarchist poet Sebastian, when he breaks into her ancestral castle in 19th-century Oberwald. On this dark and stormy night, bold Sebastian is bent on killing the grief-stricken aristocrat, but the would-be assassin's striking resemblance to her late husband paves the way for an unexpected three-day pact, without turning him in to the police, and the ignoble Count of Foehn. Nevertheless, fate has other plans. What is the mystery of Oberwald?