Watcher in the Attic (1976) 88 Films UK - Blu-ray Region B

A perverted loner roams the rafters of a boarding house in 1920s Tokyo in Watcher in the Attic, directed by one of the Nikkatsus top Roman Porno filmmaking talents, Noboru Tanaka, peeping on the unusual sexual antics of its residents in this dreamlike tale of voyeurism, obsession and murder drawn from the "erotic grotesque" literature of Japan's foremost master of mystery and the macabre, Edogawa Rampo.