Whereabouts unknown (continued)

"That's enough," the voice boomed over the speaker, "we know the rest."
"What?" Things were still blurry, but less dark. I was in an empty room, empty except for me and the chair I was strapped to. I could make out a rectangular outline straight ahead of me; I assume it was a door. I still couldn't tell who was talking or where the voice was coming from.
I wasn't scared. I was confused, angry. They know the rest? What the hell does that even mean? I started to struggle as much as I could. The straps that had me bound to the chair began to cut into my skin.
"Who the fuck are you," I shouted. "WHAT DO YOU WANT?!"
I began trying with all my strength to shake the chair, to make it move even just a little bit. It must have been bolted to the floor because at first it wouldn't budge. After some effort it began to wiggle a bit. Another big push and I heard a creaking as the bolts snapped on one side and the chair began to lean to the other. The straps loosened a bit.
The door burst open and three, what I assume were guards dressed in black tactical gear came running into the room. Two of them were attempting to restrain me as one of the straps busted and I swung my arm at them while the third pulled out the exact same gun that had been pointed at me before. He pulled the trigger and I felt a slight sting in my neck. My body began to tingle and go numb. Everything started getting even more blurry right before it all went dark.