An American Werewolf in London

David and Jack, two American college students, are backpacking through Britain when a large wolf attacks them. David survives, but Jack is brutally killed. As David heals in the hospital, he's plagued by violent nightmares of his mutilated friend, who warns David that he is becoming a werewolf. When David discovers the horrible truth, he contemplates committing suicide before the next full moon causes him to transform from man to murderous beast.