Wanna PSL?

Premise: Eva is an English PhD student, studying in Berlin. She is working on her analysis of the Erlking myth - the German 'King of the Faeries', snatcher of children, all round dark character. Her investigations draw some unwanted attention...

Aaaaand that's about all I've got so far. I'm looking to keep this as a PSL, with one character each, unless the plot requires more than one. As with all my threads, world building will be a part of this RP. In the next three weeks, I finish uni for the semester, and will have three months off, so want to get some decent RPing done in this time.

Suggestions for Characters:
The Erlking - A member of the Wild Hunt - A demon hunter - someone who has had their child taken - someone who comes to Eva for knowledge - someone looking for something Eva has, eg. a book - a changeling

This thread is COMPLETELY open to suggestion. The only prerequisites are setting it in Berlin, and it being adult/dark with possible horror elements.