Howling IV: The Original Nightmare (1988)

A successful author was sent to the small town of Drago because of a nervous breakdown, and gets wound up in an unknown mystery about demons and werewolves. She begins seeing ghosts and dismisses them as her own imagination, but when they turn out to be real, she begins to get suspicious of the small town and of its past. But at the heart of this scenic, serene village is much darker than its benign appearance; and while she hopes her vacation will dispel her visions, a sinister presence has drawn her there. She will soon discover that the ghosts that have haunted her are real and that her horrific visions are an unknown message.