My plan was to douse the hallway, start the fire, pull the alarm by the exit (to give the watchman some warning), and run. Whether the fire would be quickly controlled or whether it would spread, whether the damage would be significant or just another financial nuisance for my father, whether I would be caught and punished for it or whether I would buy a ticket out of town and change my name—I didn’t know, it didn’t matter. My rage mattered, my humiliation mattered. So I took the jug of methyl hydrate out of the plastic bag I’d wrapped it in. I put it on the floor. I unscrewed the cap and tipped it over.

The floor had sagged over the years. The liquid puddled and spread toward the interior of the building. The reek of it was eye-wateringly sharp. It filled the crevices in the linoleum and crept steadily down the hallway, pooling here and there. There seemed to be much more of it than a two-gallon jug could possibly have contained.

I took the matchbook out of my pocket and peeled off the wrapping that had protected it from the rain. The matchbook was dry but my hand was wet and I ruined two matches before I managed to strike one into a steady flame. I wondered if the fumes in the corridor might themselves be flammable, whether I was about to be immolated by my own act of revenge. I decided I didn’t care.

I was in the act of tossing the match when the door to the right opened and the night watchman stepped through.

Maybe there was a surveillance camera in the hallway, though I hadn’t seen one, or maybe I had tripped a warning light in the watchman’s cubby just by coming through the door. Or maybe he had left his post for the purpose of taking a piss. All I knew was that he was suddenly standing in the hallway a couple of yards away, staring at me. He was a skinny guy in jeans and a sweat-stained open-collar shirt. He had a big angular head and his hair was shaved close. He couldn’t have been much older than I was. His eyes bugged out in surprise. A small river of flammable liquid forked around his old brown shoes.

He opened his mouth to say something. But I had already tossed the match. It tumbled through the air, leaving a coiled trail of smoke. I had time to take a single startled step backward. The night watchman just gawked. I don’t think he understood what was about to happen.