Serial Khoon Sard Part 1 (سریال خون سرد قسمت اول) is a crime police series directed by Amirhossein Torabi is the story of a person who ensnares the perpetrators of women abuse cases and brings them to justice. The series is about a series of serial murders that a middle-aged policeman is tasked with tracking and investigating. The policeman has a friend in forensic science who is responsible for autopsies and works as an expert for the police crime division. As the story progresses, it becomes what is really going on. This series has nearly 200 different locations and nearly 20 actors in different roles, and the biggest challenges were choosing actors and filming locations.