Consider Cooly

 At first I was baffled. Then I noticed that she was using her eyes to indicate something on the floor. I followed her gaze and instantly understood the whole scene. Under her right hand, and just next to the black skirt she always wore was a key with a small stick attached to it. Looking up, I saw that the loop around her right hand was, unlike all the others, held closed by a lock. Instantly, the whole thing became clear. There hadn’t been any other person there, as I had briefly surmised. Sally had strapped herself to the wall, but kept the key in the lock on the right hand, with the stick attached to it so that she could manipulate it as she needed. And today, the key had fallen right out, leaving her trapped. 
    I bent down to pick up the key and was about to unlock her when suddenly I hesitated, looking at her. Technically, the only thing about her appearance that had changed was that her shoulder length blonde hair was no longer in a hideous bun. Still,for some reason, at that moment, I first noticed that my boss was remarkably pretty. She had a very shapely body, with a flat stomach and large breasts that were heaving with some kind of nervous energy. Her skin was smooth and her face, now graced with an expression of puzzlement rather than vague contempt had a rather gentle beauty. I realized that she was a master at hiding her femininity in plain sight and that it wasn’t working now only because she was on display for me like a supermarket good. 
   I absentmindedly let my right hand slide up the inside of her left calf. It shivered as I touched it and suddenly, I saw something dawn across my boss’s face: the knowledge of helplessness. She struggled wildly against the straps.
   My finger reached her pussy. As I had expected, it was soaking wet. Looking up, I could see her nipples push out from the inside of her bra. She froze as I slowly pulled my finger along her clit.
    I wasn’t sure what I wanted to do yet, but I wanted to do something. I grabbed her shirt and blouse and carefully pushed them under her feet, silencing her even more perfectly. I stepped back, and watched her tight stomach breathe in and out, quickly and shallowly while her weak muscles writhed against the straps she herself had designed. 
    Then I shut the door and walked out of her office. 
    As soon as I walked out, Jimmy, one of the interns, walked in. I held my breath, momentarily terrified that she would find some way to summon him. A few seconds later, he walked back out of the office.
    “Any idea where she is?” he asked.
    “I think she went home,” I answered. With that, I returned to my desk. I had thinking to do.