Supernatural / Homles Crossover Fic?

[elder-bonnie.livejournal.com]

I've recently become a huge fan of the Supernatural series, and while watching an epi, I suddenly remembered that I had read a Holmes/Supernatural crossover a while back. When I read it, though, I had never seen Supernatural before, but I still found it funny. I'd like to reread it, but I can't seem to find it now. All I recall about the plot was that the brothers, Sam and Dean, were digging up a grave or somesuch, and Holmes and Watson were investigating. Then they all happened upon each other in the graveyard.

halp?