Working with show creator Matt Charman and series producer Foz Allen, Filmograph had the unique opportunity to craft an intriguing main title sequence immersed in the world of espionage. Fragments of British intelligence files are peppered throughout and mixed with imagery portraying familial bonds. As the viewer glimpses transient pieces belonging to a much larger puzzle, confidential files are decoded, and top secret dossiers tumble one by one through the frame.