Female journalist Rahimi (Zar Amir Ebrahimi) travels to the Iranian holy city of Mashhad to investigate a serial killer who believes he is doing the work of God, cleansing the streets of sinners by murdering sex workers. As the body count mounts and Rahimi draws closer to exposing his crimes, the opportunity for justice slips further away as the ‘Spider Killer’ is embraced by many as a hero.

Based on the horrific true story of serial killer Saeed Hanaei, acclaimed writer-director Ali Abbasi (BORDER) unveils a gripping crime thriller and a daring indictment of a society in which rough justice is routinely a fact of life.