Dance Disaster

Figure this one out for me!
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Dream:
I was at a dance at my junior high school, but I was there not as a teen student, but rather my current age. [I think] I was there as a chaperone. The dance was held in the cafeteria, and everyone was dressed to the nines, but absolutely nobody was dancing; most of them were sitting at the tables or standing in small groups chatting over the music.

I spotted one of my fellow alumni at one of the nearby tables and walked over.
"We threw a much better party in our day," I said to her, "We would actually dance!"
"Yeah, no kidding!" She replied. I smiled and continued walking towards a small group near the darkened staircase. I could sense something was not right.

I checked up on the group, and everything seemed fine with them, but then one of the students started having a mild seizure and collapsed unconscious. One of the police officers came over to offer assistance. I turned to the other students to have them back off a few steps so that we could help the student, then I heard three gunshots.

I glance over my shoulder to see that the police officer had shot the boy in the stomach, thrice. Angry, I yelled at the officer,
"You didn't have to do that, he would have been all right!" He ran down the dark stairway, and I followed into the darkness. I searched the dark corridor for where he might have gone.

Checking around corners, peering into classrooms, I only have a small keychain flashlight. One of the rooms has a cat in it, and someone else is in there, not a student. He is alone, but he isn't the one I was looking for. I don't know him, but we team up to look for the bad cop, searching classrooms and side halls.

He looks into one of the darkened rooms and steps back out, saying,
"This is your room." I walk inside, and light it up with my flashlight. It is my old bedroom from the house I grew up in. It's a mess, but I know I must dig for answers in there.
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