The Prisoner is a British television series created by Patrick McGoohan, with possible contributions from George Markstein. McGoohan portrays Number Six, an unnamed British intelligence agent who is abducted and imprisoned in a mysterious coastal village after resigning from his position. The allegorical plotlines of the series contain elements of science fiction, psychological drama, and spy fiction. It was produced by Everyman Films for distribution by Lew Grade's ITC Entertainment.

George Markstein was a British journalist and writer of thrillers and teleplays. He was the script editor of the British series The Prisoner for the first thirteen episodes, and appeared briefly in its title sequence. Markstein also wrote for or story-edited other television series, specialising in espionage stories, and jointly ran a successful literary agency for screenwriters.