An American Werewolf in London is a 1981 comedy horror film written and directed by John Landis. An international co-production of the United Kingdom and the United States, the film stars David Naughton, Jenny Agutter, Griffin Dunne and John Woodvine. The title is a cross between An American in Paris and Werewolf of London. The film's plot follows two American backpackers, David and Jack, who are attacked by a werewolf while travelling in England, causing David to become a werewolf under the next full moon.