The Phantom Melody
Because of the tremendous loss of life due to World War I and the "Spanish Flu" pandemic, there was a lot of interest in the afterlife in the early 1920s. This 1920 film is set in a mansion in Italy during World War I. It's the eternal triangle all over again – two men love the same woman. However, this story is livened up – so to speak – by one of the men being buried alive by his rival.
But no problema! The guy who was buried alive somehow manages to escape from his coffin, although the trauma has turned his hair white and nobody recognizes him when he returns.