Conspiracy theories. Espionage. Terrorist acts. All this is present in the film Closed Circuit. What are not present are depth in theories developed by the characters and explanations of crucial details of the film.
Starring Eric Bana and Rebecca Hall, the film shows us a little of the British judicial system. This is perhaps one of the biggest flaws of the script. The lack of explanation of how this system works and how it is structured, does not allow us to get into the story, just accept what is shown.
About the actors, Eric Bana is what to be expected for those who have seen his films. In contrast, Rebecca Hall shows the same talent seen in The Prestige (2006) and The Town (2010). Jim Broadbent gives us another opportunity to see his gift, even in fast appearances during a 90-minute film.
The film wants to leave the place where it started, however the lack of surprising elements in the script makes everything back to the beginning. This is the same path that follows the protagonist throughout the story.