My five minutes with the first woman came to an end. Despite my relief, I was conscious of a twinge of regret. Having realised who it was I was licking - that it was the woman herself, someone who repulsed and excited me in equal measure - I had started to feel a sense of guilty enjoyment as I knelt before her and blindly licked her pussy.

I was sat back on my heels while the women swapped places. After a moment's disturbance, I felt, once more, a guiding hand on my shoulders and allowed myself to be eased into place. I was less tentative this time, falling on the second pussy immediately and allowing my tongue to press inside her from the outset. This one was completely bald and beautifully soft and had, I was sure, been waxed. It was longer than the first one, her lips seeming to stretch on and on: each lap with my tongue caused me to raise and lower my head expansively.

In contrast to the first woman, whose thighs gripped my head tightly, I could sense that this one had spread her legs wide. I could feel her arse cheeks opening and buried my chin against them. She groaned noisily, indicating her appreciation. Tracking my tongue the extent of her lips, I buried my nose between them and continued to lick downwards, towards her hole. I felt her cheeks spread even wider, affording me easier access, and I flicked my tongue closer and closer, sliding along her perineum until I felt the wrinkling of her hole. She jumped in her seat as I pushed forward, pressing my tongue into it, and opened herself wider for me. After a minute or so, I was able to bury perhaps a centimetre of my tongue in her arse. For a moment I was given over to excitement and forgot my predicament. I traced back towards her pussy, finding it soaked, her lips puffy, clitoris hard and exposed. She was sighing and breathing heavily. I think we both felt a sense of disappointment as the five minutes came to an end and I was eased back on to my heels to await the third of my challenges.

Perhaps I was overcome by the strange excitement, but it took a moment before the enormity of my problems became apparent. However much I may have enjoyed that - and, despite the nature of the circumstances, I had to admit I did - there was one glaring fact.

I had no idea whose arse my tongue had just been in.

Number three was settled into place and for the last time I was rocked into position. Fear had reasserted itself within me as I faced the likely consequences of my situation: if I failed this challenge I was condemned to a lifetime of servitude with these women. It was an appalling thought, but my cause seemed hopeless. I felt tears in my eyes as I probed forward with my tongue and sought the third recipient of my ministrations. May as well get used to this, I thought - I'll be doing it for the rest of my life. And getting punished if I fail to meet expectations. Oh God, what had I done?

My tongue found her pussy. Again, it was smooth, but not as much as the second. Recently shaved, I thought, but not waxed. I explored curiously, noting how small and delicate it was. Considerably different from the last: her vagina was very small, her lips soft and smooth. I could go from her clitoris to the base of her vagina in one easy sweep of my tongue. It was beautiful, I had to acknowledge. I longed to see it.

I concentrated on her clitoris, gently easing it from beneath its hood and circling my tongue around it. She seemed to like direct contact on it, and I flicked my tongue over and across, over and across, sucking it into my mouth and nibbling it gently. Once more I began to lose all consciousness of my position and gave myself over to pleasuring this magnificent pussy. Her thighs closed against me, skin soft against my cheek, cool against my own, excited heat. Suddenly, a chill swept through my body, tracing down my spine with electric energy.

There was no question: I knew who this was.

The skin. I had noticed it immediately I saw her, how smooth her skin was, like alabaster, dense textured so that it appeared to be faultless, pure like a diamond. I licked her thigh and rubbed my cheek against her, finding only firmness and softness. It confirmed my belief.

This was the blonde woman.

I launched myself on her pussy once more, lapping between her lips and sucking her clitoris, triumph coursing through my body. I knew the first one, I knew the last one. That meant the second one had to be the brunette.

I could identify all three.

My final five minutes came to an end and I tried to compose myself as I felt my hands being untied and the blindfold removed from my eyes. All three women were seated before me expectantly.

"Well, how did you do?"

"I don't know," I replied. "I think 3; I think I have an idea."

"Excellent. Let's hear, then."

"Okay." I exhaled deeply, aware that my entire future was at stake, but confident that I would prevail. "Number one was you." I stared into her eyes, seeking confirmation, but she looked blankly, divulging nothing. My confidence waned a fraction. "And number two was you," I continued, nodding to the brunette. Again, there was no reaction. "Which means number three was you." I smiled at the blonde, aware that I was blushing slightly. I never could conceal my thoughts.

There was silence. The women looked at one another. I waited, still convinced I was right, but the longer they stared at one another the less sure I became.

They seemed to be communicating silently. It was all in minimal gestures - slightly raised eyebrows, sardonic smirks, lengthy blinks. At last, they appeared to come to a consensus. The woman turned to me.

"I'm sorry, Harriet. That was an incorrect answer."

My world collapsed. I began to cry, biting my lip in fear. The consequences of her words fell heavily on my shoulders, weighing me down with the contemplation of a lifetime of base servitude. The thought appalled me, but I knew I couldn't fight it. I tried to focus, but the enormity of what had happened was too great to comprehend.

I had gambled and lost my freedom. I had tried to become a Member but failed, and now I had to face the consequences: I would spend the rest of my life serving these women.

Even though I knew, absolutely knew, that I had been right.

Perhaps some things are meant to be.

"Now then, servant," the woman said. Her tone was brusque, condescending, unforgiving. I would have to get used to this, I knew. "There are three pussies here which you left in a state of some excitement. I think you know what your first duty will be, don't you, servant girl?"

I nodded obediently. She smiled, her teeth bared in triumph. "Good, now get that worthless tongue on my cunt 3;"