Boom! is a 1968 drama film directed by Joseph Losey, adapted by Tennessee Williams from his 1963 stage play The Milk Train Doesn't Stop Here Anymore. It stars Elizabeth Taylor, Richard Burton and Noël Coward. The film centers on a wealthy, terminally-ill woman living in seclusion on a Mediterranean island (Taylor), whose existence is disrupted by the arrival of a mysterious, possibly-mystical man (Burton).