This link leads to Candle Cove by Kris Straub, read it if you haven't before, then come right back. It's short, it won't take more than a few minutes.
I think that story is pretty cool so I based a one page dungeon on it. No monster stats or anything, you can figure those out yourself. I may or may not have ruined the original story, depending on how you look at it. Kris Straub would probably say I fucked it up by explaining too much. To be honest, trying to come up with a motivation for Horace's behavior may have been a step too far. I won't be sad if you to cross that part out.