Oscar West is killed when his power boat blows up during a race, where The Saint has seen a shifty character of his acquaintance. Oscar's widow Annabelle sets off for the French Riviera to collect 'The Brave Goose', a luxury yacht left to her by her late husband, followed by associates of Oscar, who believe that she knows the whereabouts of the spoils of a gold bullion robbery in which he was involved. In order to get her to talk they trap her in a bull-ring with a fierce bull. Happily for her the Saint has also been on her trail.