Then on Tuesday night, my sister, Wendy, dropped a bombshell on us. She had to go on a 1-month cruise with a rich business associate and she wanted us...to take her 15-year old son, Peter, while she was away. We had often had Peter to stay with us in the past, and he always fitted in well. He is a really nice kid, actually at 15 he could easily pass for a young man of 18. He plays a lot of sport which means he is fit, and looks it, he is tall, not quite 6', his manners are immaculate, and he. "So what about it?" It?" Sex." I'm married, Jenny." It wouldn't have to be anything meaningful. Just a quick fuck as Toby likes to say." I'm sorry, I don't do quick fucks," I gulped, "or slow ones for that matter. I'm sorry if I gave you the impression that I did." I tried to extract myself from her embrace."NO!" she gasped. "I'm sorry. I didn't mean to offend you. It's just that a lot of married men like..." I'm married, but I don't cheat on my wife," I snapped."I can be an idiot sometimes,". .It was then that Catherine noticed the beautiful young black woman standing near the corner in the shadows. Completely naked, her beautiful face wasn't totally visible as her head was hung, eyes cast downward to the floor."Racine and Marcel have brought me Cheena to provide me with an evening's amusement. I couldn't accept such a lovely gift without providing something in return."Catherine's eyes flicked to those of her mistress, but only for a second as she knew it would do no good to plead. He had a rather grimly apologetic expression on his face."Hate to have to tell you this, Pal, but you're the latest guinea pig for our test lab."She looked at him for several seconds, trying to understand what was happening. As the import of his words sank in, she began to see Heidi's ravaged body in her imagination."Betty's already a test case, and Heidi hasn't recovered enough to start a new series. We have to have someone in reasonably good health, or the results would not be at all.