First Look:
Petra Shirazi is an agent with the Agency.
That term is often used for denote the CIA but in this case it might not be since there are numerous references to the CIA doing something, each time it is phrased as though it was a different organization than the one Shirazi works for.
The action in the series takes place in the year 2021 with occasional flashbacks a few years before. Further, though the main character is, in my opinion, Shirazi, her actions are all in action against and then in conjunction with a highly dangerous Iranian assassin known as the Ahriman.