Alexandre Dumas

greetings to all!
It's great to be amongst so many friends and lovers. The problem is, that as I have aged my memory has lost its edge. Maybe someone could help me out with this.... I wrote a story about these two German university students were traveling back to school after the semester break. Along the way a storm gathers and unleashes torrents of destructive rain and wind. Along the way they stumble across a castle ruin and seek shelter there. However it is not to be because it is a rule in. Suddenly! a beautiful nymph appears and leads them to the home she shares with her brother and father (also local preacher). These two young men are from German aristocracy; the protagonist falls all love with family daughter of the preacher, the antagonist is the devil reincarnate and informs her that she will be his someday. I thought I had entitled this story At the Mouth of Terror, but have not been able to find it in my library facility please help me with this question.
Respectively Al