Fantômas se déchaîne (French pronunciation: ​[fɑ̃tomas sə deʃɛn], English: Fantomas Unleashed) is a 1965 film starring Jean Marais as the arch villain with the same name opposite Louis de Funès as the earnest but outclassed commissaire Juve and the journalist Fandor, also played by Marais. It was France's answer, with the Fantômas trilogy starting in 1964, to the James Bond phenomenon that swept the world at around the same time. It is the second in the trilogy of Fantômas films, that became extremely successful in Europe and Soviet Union and found success even in the United States and Japan. In this episode Jean Marais also plays professor Lefebvre.