My chapter has a ghost named Mary. Supposedly she hung herself out the window right next to our Pin light!
People who live in room 4 always have weird stuff going on and I know living in room 6 I had some freaky stuff happening in there like things being rearranged and also doors/drawers opening with no one there.
The TKE house on campus used to be a ZTA chapter in which on the third floor a girl was raped supposedly. (It's located on the corner of Hampton and Crown!) The third floor is condemned and the ghost supposedly "moved" across the street to the Alpha Chi house when the TKEs took control of the house. There's also talk of the old Beta Theta Pi house (which is now part of the Christian Theological Semniary) being haunted because their house mom was raped in the house.
I don't know if any of this is true. All I can say is that there sure were a lot of rapes at Butler if the stories are true!