An American Werewolf
in London was released in 1981. In this movie, two friends,
vacationing in London, are attacked by a werewolf.
One is killed, the other only injured. The killed
friend comes "back" from the dead, with skin hanging
from his face, to tell his other friend that he is now
the last werewolf, and must kill himself to end the
cycle. The friend who escaped doesn't believe it, but soon . . . he
too begins to
change . . . There was a sequel in 1997 (An
American Werewolf in Paris).