At first this film seemed mediocre at my first screening. It was okay aside from minor nitpicks such as Jennifer's inconsistent Russian accent. However after the second and third viewing (Not by my choice but by circumstances), the film sort of grew on me and I would rate this as one of the best films released this year so far.
Both Lawrences (Jennifer and director, Francis) could have gone the Bond/Bourne path and make her a kickass heroine (Charlize Theron beat her to it in Atomic Blonde), but instead they went for a more pessimistic and bleak tone akin to 'The Spy Who Came in from the Cold', 'Tailor, Tinker, Soldier, Spy'. It is a slow-burn Cold War era thriller with present Russia no different from its Soviet era.
Those expecting thrilling chases and spectacular shootouts will be sorely disappointed. This film focuses more on relationships between people on both sides of the 'Iron Curtain' (if it still exists!), character studies and motivations and plot mechanics that will frustrate the ADHD Marvel saturated crowd. You do get to see Jennifer in the nude briefly if it's carnal pleasure you are seeking.
What strikes me for this film if the acting. I will not reveal the plot twist but if you do get to see it the second time, do watch out for the subtle nuances and speech patterns of certain actors within the first ten minutes, that is masterclass acting there.