Honor killings, as one of the most severe forms of gender-based violence in patriarchal and traditional societies, occur mainly with the motive of preserving family honor and jealousy. This research aims to investigate the criminological, criminological, and criminal policy dimensions of honor killings in Iran, and in particular analyzes the representation of this phenomenon in the film Rusty Little Brains by Hooman Seydi. The research method is descriptive and analytical and based on qualitative content analysis. The findings show that honor killings mainly occur within the family, with most victims being young women and perpetrators being close male relatives (father, brother, husband). In the film Rusty Little Brains, this pattern is clearly seen; where Shahroz, as the youngest member of the family, is ordered to strangle her sister Shohreh in order to benefit from a lighter punishment. The sequence of the brothers cutting Shohra’s hair also symbolizes the intense control of women’s bodies and male dominance that ultimately leads to violence. Perpetrators often view their actions not as crimes but as moral and necessary duties to cleanse the family’s honor, and show no remorse. Facilitating factors include traditional cultural beliefs, poverty and marginalization, and legal loopholes (such as the father’s exemption from qisas and Article 630 of the Islamic Penal Code). By realistically depicting the cycle of violence in a marginalized family, the film well represents these factors and shows how a criminal and lawless environment establishes honor killing as a "legitimate" response. The research results emphasize that in order to effectively confront this phenomenon, it is necessary to reform facilitating laws, criminalize honor killing as an independent crime, strengthen social support for women at risk, and implement cultural programs to change attitudes towards the concepts of honor and jealousy.