Charlie Chaplin filmmaking methods, claiming such a thing would be tantamount to a magician spoiling his own illusion. Little was known about his working process throughout his lifetime, but research from film historians – particularly the findings of Kevin Brownlow and David Gill that were presented in the three-part documentary "Unknown Chaplin" (1983) – has since revealed his unique working method. Until he began making spoken dialogue films with "The Great Dictator", Chaplin never shot from a completed script. Many of his early films began with only a vague premise – for example "Charlie enters a health spa" or "Charlie works in
Charlie Chaplin in March, and surrendered his re-entry permit in April. The next year, his wife renounced her US citizenship and became a British citizen. Chaplin severed the last of his professional ties with the United States in 1955, when he sold the remainder of his stock in United Artists, which had been in financial difficulty since the early 1940s. Chaplin remained a controversial figure throughout the 1950s, especially after he was awarded the International Peace Prize by the communist-led World Peace Council, and after his meetings with Zhou Enlai and Nikita Khrushchev. He began developing his first European film, "A King