So i read this story a while back, I think it may have been a crossover of Supernatural with some police show or something.
Basically a cult takes over the school that sam and dean are going to, and they break in or something with john to try to stop them. Dean ends up helping a law enforcement officer who marvels at how well he does for being so young.
I remember one scene in particular when all of the kids at the school are forced into the gym by the cult people, and to scare them one of the students is hung from the basketball hoop...
Anyone know this story?