Agent Tamar is a strange main character for espionage genre. She makes many mistakes and some of her actions make no sense, especially the high profile activities she engages in. Yet her operators recognize that like we do, so the script at least is self aware.
Now, the closure... well, the no-closure - is frustrating.
Still, it is interesting to watch, pretty intense, without too much violence, and the Iranian society is nicely portrayed as a diverse and lively society.