Hour of the Wolf (Swedish: Vargtimmen, lit. 'The Wolf Hour') is a 1968 Swedish psychological horror film directed by Ingmar Bergman and starring Max von Sydow and Liv Ullmann. The story explores the disappearance of fictional painter Johan Borg (von Sydow), who lived on an island with his wife Alma (Ullmann) while plagued with frightening visions and insomnia.

References:
https://en.wikipedia.org/wiki/Hour_of_the_Wolf