Pamet (1985)

The son of Elena-Kirill died unknown how. The new socialist government decided to build a monument to him in the city. Elena doesn't need a monument. She wants to find her son's traitor. She gradually comes to understand who he is. With a gun in his bag, he heads for the traitor's house. There, she learns that the traitor is not among the living and understands the meaninglessness of his desire for revenge.