Gate of Hell (1954)

In this lauded Japanese drama, the samurai Moritoh Enda (Kazuo Hasegawa) performs a heroic act by rescuing the lovely Lady Kesa (Machiko Kyō) from a violent uprising. The warrior falls in love with Kesa, but becomes distraught when he finds out that she is already married to a man named Wataru Watanabe (Isao Yamagata). Unable to shake his obsession with Kesa, Moritoh grows increasingly unstable and will not stop in his pursuit of her, no matter what the consequences.