The doors opened.

The night clerk came out with an armload of folded towels, head down, and went through the door marked LINEN without looking up.

The doors closed again.

The corridor went back to humming.

I slid the key into four twelve and turned it.

The bolt went home with a sound that carried all the way to the stairs, and I stood with my hand on the knob a second longer than I needed to.

Behind me, four fourteen was dark under the door.