Dark Staircase

Kellen and I decide to visit Holly at the video store. We go inside, but beyond the counters there are no movies, but instead the interior of a house. Holly tells us to put our bags down by the shoe rack. "Good thing you're both wearing black," she tells us. I look down and realize that I am wearing the same black ball gown I wore to winter ball. Kellen isn't actually wearing black, but apparently Holly hasn't noticed.
Cameron comes from behind the counter (he and Holly are both wearing their black work uniforms). He tells us that the party us upstairs, and he'll see us up there as soon as we're ready. As they both leave, I notice that the house is very dark, and the gray carpeting seems to glow where the moonlight shines through the sliding glass door. Kellen and I can hear muffled music from the party going on above us. We start up the staircase, even though we can't see the top because of the darkness.
We reach a square landing after only ten stairs, and the next staircase doubles back, quite like the emergency stairs in a multi-story hotel. I can see a balcony across the room, maybe three more stories up, where people are dancing. They are all wearing black.
I begin to notice that the stairs are getting steeper and narrower, although they are still carpeted. After five more flights, I realize that we should be at the party by now. But although I can still hear muffled music, I can no longer see a balcony, just dark walls. I wait for Kellen to catch up with me. Her black hair has come undone and is falling out all over the staircase. For some reason this does not worry me and I tell her we have to keep going.
Finally we reach what seems to be the last flight of stairs. It is so steep that, when I look up into it, it feels like I'm looking down into a deep chasm. The muffled music pulsates from deafening to inaudible. Kellen is terrified; she grabs my hand and tells me not to go up but I feel like I have to. I climb up one step, which by now is about two feet high and maybe six inches deep. As soon as my feet leave the ground, I feel myself being pulled upwards. Suddenly I am terrified. Kellen grabs my legs and pulls me back down, and we sprint back down the stairs until we are back by the shoe rack.
"We have to get out of here," I say, but I can't find my bag or my keys. I am frustrated by my dress. It won't let me move as quickly as I need to. I know we have to leave before the thing at the top of the staircase finds us, but I can't find anything. I decide to take off my dress. I have regular clothes underneath, but as soon as I get my dress off, the regular clothes begin to morph back into the dress. Finally I spot my bag underneath the shoe rack, and I lay down on my stomach so I can reach it. When I get up, Kellen is gone. The music is almost deafening. I know that I am going to die.