The wheel of the book cart squeaked as it rolled across the beige floor tiles. I was alone on the 6th floor and the silence was still eerie even after working here two years. I turned the timer for the light, giving myself about 20 minutes, and parked the cart at the center of the aisle.
I began shelving books distractedly. The library keeps the temperature low throughout the building to help preserve the books, and I had forgotten to bring a sweater. The chill trickled throughout my body, coming up the backs of my bare legs to my thighs, covered loosely by the silky fabric of my skirt and moving up through my chest, causing my nipples to harden beneath the thin cotton of my blouse. It was moments like this - alone and bored - when my mind couldn't help but wander. While one hand reached up to place a book on the high shelf, I let my fingers dip discreetly below the scoop of my neckline. My pink fleshy bud-like nipples grew harder, becoming clearly visible through my shirt. I peeked through the shelves around me to make sure there was no one else on the floor.
I tried to concentrate on shelving the books again, but it was difficult to stay focused. Lust began to ache between my legs and I began to wonder how much I might be able to get away with alone in the stacks. I allowed my right hand to graze my naked thigh, testing the hem of my skirt. Inching upward while stealing glances every few seconds to make sure my privacy wasn't at risk.
My hand had traveled as far as where my inner thigh met the gentle lace trim of my panties when I heard footsteps enter the room. I quickly pulled my hand out from beneath my skirt and frantically smoothed the fabric down. My nipples were still firm, but there was nothing I could do about that.
I turned and saw a dark silhouette of a man through the shelves walk down an aisle two away from the one I was in. I turned back to my work and tried to act as though nothing had happened. I continued shelving books, but I had a strange feeling of being watched. I could feel this person's eyes watching me and I listened closely. He cleared his throat, but I could not hear him pulling any books from the shelves. I wondered if he had seen me - if he had known what I had been doing - but it was impossible. I had been shielded by the bookshelves and he had not come any closer than 10 feet from me.