Dekalog (1989)

S1E4 Dekalog: Four

"Honor your father and mother." Anka, a young woman, has shared a deep bond with her father following her mother's passing, forging a friendship that transcends the typical parent-child dynamic. However, everything changes when Anka stumbles upon a letter from her deceased mother, revealing shocking information that leads her to reevaluate her entire relationship with her father, calling into question his true identity.