An American Werewolf in London (1981)7.6 /10

Storyline:  While backpacking in rural Britain, American student David is attacked by a mysterious animal, resulting in the death of his friend Jack. While recovering in a London hospital, David begins to experience disturbing visions of Jack, who informs him that he has become a werewolf. As the full moon approaches, David realises that he could become a threat to others.