Swallows and Amazons series and observed, "It is the portrayal of this spirit which makes play a matter of desperate yet enjoyable earnestness which gives their distinctive stamp to Mr. Ransome's books. ... Because he understands the whole-heartedness of youth he can invest a momentary experiment, such as young Roger's Indian scout work, with real suspense." In 1963, the BBC screened a television series starring Susan George as 'Kitty' (changed from Titty), which was violently disliked by Arthur Ransome. The six-part series aired in September and October 1963. In 1974, EMI produced a film version of the "Swallows and Amazons", starring Virginia McKenna and
Swallows and Amazons series discussion and theorising about precise relationships. This contributes strongly to the series' air of authenticity. The first book, "Swallows and Amazons", and four sequels — "Swallowdale", "Winter Holiday," "Pigeon Post" and "The Picts and the Martyrs" — are set in and around an unnamed lake in the English Lake District. Most of the unfinished "Coots in the North" would also have been set on the lake had Ransome completed it before his death. The lake and the surrounding fells are based on an amalgam of Windermere and Coniston Water, places where Ransome spent much of his childhood and later life.