Episode 5 serves as the high-stakes setup for the finale, and it excels by shifting Mark Brydon from a reactive diplomat to an active investigator. After the devastating murder of Eshan, Brydon is at his lowest—recalled to London and facing the end of his career.

The scene where Mark slips away from a bugged function to meet a shattered James Sinclair is a highlight. The restless camerawork and tight editing amplify the sense of paranoia that has become the show’s signature.

While some critics at the time found the show's "spaghetti" of plot threads and "jerk handheld camerawork" a bit much, Episode 5 is where those threads finally begin to align. The episode successfully bridges the gap between the grand geopolitical conspiracy of Tyrgyztan and the personal stakes of those caught in the middle.

The State Within TV review: unknown knowns - Flick Filosopher