It's set in the 70s after the Munich attack. Israeli intelligence are on the track of a Palestinian terror cell of four (I think) brothers. Eldest brother is the (extraordinarily good) bomb maker. Youngest brother recruits people to plant the bombs. He favours a particular type, young, blonde, Western girls. We see one planting a bomb by giving a man a suitcase to put in his au pairs room. His young child, home sick from school, is killed as a result.
Israeli intelligence track down the bomb planter and youngest brother either but rather than "taking them out" they want to get the whole cell. The plan seems to be to recruit a young English actress, Charlie, who is very much youngest brother's type.
Charlie seems to be incredibly smart, but for some reason not quite smart enough to avoid being alone with a man she barely knows who is clearly lying to her.
I agree, the period detail is brilliant. It's also interesting to watch knowing that it's set so, relatively, soon after the Holocaust.