It’s an overreaching film, though still worth watching. To be honest, I had higher hopes for this movie. I stumbled across it on television by chance, and while I’d previously heard about it—I’m not sure why—I thought it would be really good. It didn't quite live up to my expectations; the story gets bogged down between political intrigue and a police procedural element, which ultimately affects its rhythm. The narrative begins with a drama centered on MGB agent Leo Demidov as he tries to safeguard his wife after a prisoner reveals her as an accomplice. His efforts are rewarded, but it's so clear that he was trying to protect her that his superiors send him to an industrial city outside of Ukraine. Simultaneously, he must inform a friend about their son’s death in what is supposedly a train accident—though it’s obvious the boy was murdered. In this new location, Leo uncovers numerous similar cases involving children, leading him to suspect someone is killing them along the railway line. The challenge lies in convincing the Soviet police that these crimes aren't limited to the capitalist world. The film boasts strong dialogue and a well-crafted script, but I felt it tried to do too much and couldn’t quite manage it all effectively. It’s evident how difficult it is to balance the two storylines—the serial killer investigation and the protagonist’s conflict with zealous authorities—both of which are equally important and impactful. There's another aspect that left me puzzled, concerning how Leo's wife undergoes a significant transformation, shifting from a passive character with little significance to an active participant crucial to later events. While this change does allow her to return to the forefront, it also feels like a contradiction. The conclusion isn’t terrible, but it lacks finesse; the feeling of tension and suspense gives way to more action sequences, which is quite different from what the film had been building toward. The cast includes several recognizable actors, including Tom Hardy and Noomi Rapace in the leading roles. Their performances are solid and well-thought-out; no one was particularly bad, and they both seem very comfortable in their parts. Joel Kinnaman portrays a believable villain and does a good job with the role of the political fanatic. Vincent Cassel and Gary Oldman are experienced veterans who deliver reliable performances as prominent supporting characters. The only real criticism I have (and it’s not really the actors' fault, but director Espinosa's) is that awkward, forced pseudo-Russian accent they attempted to use; it shouldn’t have been done at all. If the director wanted a particular accent so badly, he should have cast Russian or Eastern European actors who could speak English. From a technical standpoint, the film relies heavily on cinematography and camera work. They made a concerted effort to use these elements to evoke various feelings in the audience, from the harshness of winter cold to the bleak, gray, unwelcoming, and suspicious atmosphere of Soviet cities during the 1950s. I also appreciated the cars, uniforms, costumes, and sets; there was clearly an attempt at historical accuracy overall. The music serves its purpose but isn’t particularly memorable.

Source on TMDB