When Naomi rode up the long road to the villa, there were no lights anywhere, even though his car was parked by the door. She switched off the engine; as the light from the big headlight faded she was almost invisible except where the moonlight gleamed on her smooth leathers. She sat up, levered the bike back onto its stand, took off her outer gauntlets and helmet and, shaking out her long red hair, listened to all the noises of the warm evening reasserting themselves after the noise of her arrival; until the ticking of the cicadas was louder than the ticking of the engine as it cooled. The bike had one small modification, impossible to detect while it was being ridden. A UJ, normally used on a windsurfer to connect board and rig, was mounted at the base of the petrol tank to position a dildo where it was most comfortable for the rider. She reached down and pressed the button to disconnect herself from the machine, leaving the dildo inside her for the moment. Soundlessly, she swung her long leg over the saddle, stood up and stowed her riding kit in the top box. Bending sharply from the waist, she tossed all her hair forward and gathered it into a ponytail on the top of her head with an elastic band then pulled it through the hole in the top of a leather hood. She laced it up at the back and then buckled it with a strap around her neck. Eyes, lips and nostrils were now the only bits of skin showing, if you looked carefully enough. She straightened out, reaching up to her full height, smiling to herself. A light film of sweat was building up inside her suit.

Her rubber soled boots made no noise on the path, the door swung on oiled hinges; the floors of polished marble were giving back some of the heat of the day. As she moved into the bedroom, she could hear the sounds coming from the headphones Sean was wearing to distract him from any external noises; she estimated that he was about half way through the compilation CD of drum ’n bass she had prepared for him and enclosed with his instructions. He must have been lying there for about half an hour.

Shake one die. If is odd, go to 1, if even, go to 2.

1.He was still totally unaware of her presence; this was her game and he was playing by the rules. His breathing was normal and had not changed since she had entered. The thick padded leather hood covered his head; two holes by his nostrils his only contact with the air. He had spread-eagled himself face up on the sturdy four-poster bed and both arms and legs were chained to the posts with heavy self-locking cuffs. She had explained that the cuffs were electronic; if she had been delayed then a signal would have been sent out from the player as soon as the CD had come to an end to release him. He had trusted her completely and now she knew she still had him in her power for another thirty minutes. His hips were elevated by a resilient foam wedge underneath him; his penis lay relaxed, hanging to the left.

She seized hold of his manhood with her gloved finger and thumb. With a few strokes he was ready for her. She removed the dildo from herself and pressed it to his anus; slippery with her own juices it slid in easily. He would have groaned aloud but true to his instructions, he bit hard on the ball gag in his mouth and kept his peace. She climbed on top of him and crouched with her boots in his armpits. She lowered herself so that he could smell her arousal while she took his penis in her mouth. Her hair hung down and tickled him between his thighs. She stayed there for a while, for a whole track, gently sucking on him, playing with him with her tongue while he bucked and thrashed around. She could feel his pulse, feel him swelling and relaxing as he obeyed his orders and fought to prevent himself from cumming.

Now she rearranged herself. Squatting, she lowered herself on to him the other way around, allowed him to fill the place left by the 500cc dildo she had been riding. Again, he stuck to his script, did not try to bring the matter to a conclusion, allowed her to find her rhythm. She sat there while the music pounded in his ears. As the next track began, she knew exactly how long she had.

Let the die decide the next step. If it is even, go to 3. If it is odd, go to 6.

3. This was going to be some dance. She loosened his hood and freed him from the gag. He dragged in deep lungfuls of air. Now riding him as a cowboy at a rodeo, now crouching over him and burying her tongue in his mouth, she brought herself to her own climax.

If you have got this far, shake the die for the last time. If odd, go to 4, if even, go to 5.

4. She timed it so that she came, he came, and the music finished, the cuffs snapped open, he wrapped his arms and legs around her, rolled them over together, still buried deep inside her while they both gasped for breath.

5. It did not take her long. She had been thinking about this all the way, had allowed the ride to work her up to a nicely balanced state of excitement. As she arched her back and dropped her weight on to him her orgasm rolled in over her, starting from her boots and rushing through her like a rocket taking off. She stayed there till the end of the track and left him listening to the music. She was back on her bike and away before the CD finished.

6. But he was never going to be as good as her motorbike. She wondered why she had gone to all the trouble of setting him up on her second best bed. She finished herself off by hand, climbed off stiffly, leaving him sticking up uselessly, retrieved, disinfected and reinserted her dildo, snapped it back in place on her machine and rode off.

2. He stirred as she entered. He had been listening for her. This was against the rules. She turned on her heel, returned to the bike, reconnected herself and rode off. She would have to continue his training for a little longer.