There's a chance when you go back to wolves den.
Wait, what wolves den? I didn't even know there was a wolves den, and I thought I had found all of the locations that are available so far.
Edit: Oh, I need to do the cure for lycanthropy. I'm not even sure how to get that quest, since no one is a lycanthrope in my save right now. I'll look through the guide and see if I can figure it out.