The Combat (1976)

Amir and Maryam plan to get married, but Maryam’s car crashes into a ravine, and newspapers report her as dead. Maryam’s cousin, Zari, who has feelings for Amir, secretly brings letters that Maryam writes to Amir and tries to get close to him. Maryam returns and discovers that Amir and Zari have developed feelings for each other. However, after learning of Maryam’s survival, Amir marries her, and they become parents to a child shortly after. Zari marries a wealthy man and, with the help of her broker, Bahram, schemes to obtain her husband’s wealth. Zari’s husband dies of a heart attack, and Amir is falsely accused of being the murderer by Zari.