Bewitched Captivity
I was kidnapped, taken off the street by some random person I had never met before. He threw me into a room, one filled with beds and other children he must have stollen away. They were all ages and from all over the world, though most could speak English.
I was the second oldest, I think. He acted older than me, at least. We never really compared ages. He wasn’t really an interesting person though, and was mostly myself and the younger children working to escape.
The man who had us was magical, and while it was possible to leave the room, there was no way to go up the stairs or to escape through the windows. Somehow I managed to get out while the man was away, but only me. I came back with a detective who then continued trying to figure out how to get everyone out, but the barrior stopping people from going up the stairs prevented us from getting back to the kids on the other side.
One of the younger children later proved herself to be an assassin, though she wans’t trying to harm any of us. She was after the sorcerer who captured everyone, and was purposefully captured. That didn't mean she wasn't trapped, however. She had no other way for escape except for a small charm that had the possibility of working to stall his magic.
She didn't know where to put it, and none of us were able to help her.
We did manage to escape, however. The sorcerer entered the room at one point, not expecting an ambush. It seemed he wanted us alive, and thus didn't kill many while the girl managed to kill him.
We left by running up the staircase.