You were on a night shift at the pizzaplex, walking around and holding the flashlight up. You then heard some people talking from around the corner..

"BROTHER, KILL WE SHALL FOR BLOOD? BROTHER??"

They seemed to be talking to thereself. They then speak up again, the the voice is more..sinister and calm.

"Yes, yes brother, we shall."

It was like..2 people..in the same body. You kept quiet, though, not expecting to see.. or hear such things on such an ordinary night.