An American Werewolf in London

Two American backpackers, David Kessler (David Naughton) and Jack Goodman (Griffin Dunne), are walking the Yorkshire Moors when an unidentified animal attacks them in the dark. David wakes up in a London hospital under the care of Nurse Alex Price (Jenny Agutter), and John Landis lets the jokes and the dread share the same room. His body and his mind have started to change, and the full moon is coming.