The Man Who Finally Died

The Man Who Finally Died is a 1963 British CinemaScope thriller film directed by Quentin Lawrence and starring Stanley Baker, Peter Cushing, Mai Zetterling and Eric Portman. It was based on the 1959 ITV series of the same name. The screenplay concerns a German immigrant living in Britain who receives a mysterious phone call telling him his father is not really dead. He returns to Bavaria to investigate the matter.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.