An American Werewolf in London is a 1981 British-American horror

Horror film

Horror films seek to elicit a negative emotional reaction from viewers by playing on the audience's most primal fears. They often feature scenes that startle the viewer through the means of macabre and the supernatural, thus frequently overlapping with the fantasy and science fiction genres...

 film, written and directed by John Landis

John Landis

John David Landis is an American film director, screenwriter, actor, and producer. He is known for his comedies, his horror films, and his music videos with singer Michael Jackson.-Early life and career:...

. It stars David Naughton

David Naughton (actor)

David Walsh Naughton is an American actor and singer best known for his starring roles in the 1981 horror film An American Werewolf in London, the 1980 Walt Disney comedy, Midnight Madness, the 1984 comedies Hot Dog.....

, Jenny Agutter

Jenny Agutter

Jennifer Ann "Jenny" Agutter is an English film and television actress. She began her career as a child actress in the mid 1960s, starring in the BBC television series The Railway Children and the film adaptation of the same book, before moving on to adult roles and relocating to Hollywood.She...

, and Griffin Dunne

Griffin Dunne

-Personal life:Dunne was born Thomas Griffin Dunne in New York City, New York, the son of Ellen Beatriz Dunne and Dominick Dunne. His mother founded the victims' rights organization Justice for Homicide Victims and his father was a producer, writer, and actor...

.

The film starts with two young American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 men, David (David Naughton) and Jack (Griffin Dunne) on a backpacking holiday in England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

. Following an awkwardly tense visit to a village pub, the two men venture deep into the moors at night. They are attacked by a werewolf

Werewolf

A werewolf, also known as a lycanthrope , is a mythological or folkloric human with the ability to shapeshift into a wolf or an anthropomorphic wolf-like creature, either purposely or after being placed under a curse...

, which results in Jack's death and David being taken to a London

London

London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

 hospital.