interrogator

He is a sweary, pompous and then needy figure, unaware of how much he is being exposed by his TV interrogator, Emily Maitlis, played by Ruth Wilson.

I won’t say more because that might get into FBI interrogator territory.

He’s told to start there by his interrogator.

But in the finale, as his interrogator tells him, he’s done with the past tense.

He speaks of casting the audience in the role of the Captain’s interrogator, the Commandant, at the re-education camp from where Captain is imprisoned and narrating the story.