The intelligence service team gets to a name during the investigations that may come as a surprise to them; Sara Azizi.
But who this woman is and why hearing her name is so shocking?
Don’t miss the upcoming episode of the series tonight at 19:00 GMT.
Each episode of the 30-part series is also repeated the next day at 03:00, 08:00, and 14:00.
Produced by Mojtaba Amini and directed by Javad Afshar, the series follows the Iranian intelligence agency when it discovers a large spy ring operating in the country.
Then a cat and mouse game ensues between Mohammad, the agent in charge of the case, and Michael, one of America’s key spies in Iran.
The cast list of the series includes Vahid Rahbani, Pendar Akbari, Leila Otadi, Sara Khoueeniha, Payam Dehkordi, Aliram Nouraee, Kambiz Dirbaz, Mohammad-Reza Sharifinia, Farhad Qaemian, and Daryoush Farhang.