A comedy of horrors
Not that Viy (Konstantin Yershov, Georgi Kropachyov, 1967) is the first-ever Soviet horror film (There's A Spectre Haunts Europe (1923)) or even the first adaptation of the Nikolai Gogol story (the first was 1909, considered lost)-- but it's the rare Soviet horror film so visually striking and tonally bizarre it's at least worth a look.
