We had never seen anyone back there in the woods and temptation beckoned us and we gave in. It was the tiniest bit of kink in the vanilla sex lives of...a forty-something year old respectable couple. We'd stand there with the water flowing down on us kissing, caressing, touching each other. Seeing my wife, Anna's naked body glistening in the sun was like no other turn-on I had ever experienced. There had never been another woman in my life, just as there had never been another man in hers. The. .. Mistress," Charles stammering.Now he had a low self-esteem. She was really rich. He felt like a peasant visiting royalty."I know I have a big house slave. Now I want you to follow me upstairs," she ordered him.They climbed up the stairs. Each step Charles took, he felt more and more like a real slave. Once they were on the top floor, he followed her across hallways until they reached a hallway full of bedroom doors. They walked until they finally reached her bedroom door. Charles noticed. Rachel: Hahahaha! This was such a great idea. Did you know they have a hot tub here too?Me: No, I didn’t.Rachel: Let’s get more comfortable there.Me: Sounds good!Rachel climbs out of the pool and walks to the area where the hot tub is supposed to be. Let’s follow her. The hot tub area is covered by a wooden fence. Rachel suddenly stops and turns around towards me in shock.Rachel: Stop!Me: Why are you whispering all of a sudden?Rachel: There are people behind there.Me: So?Rachel: They’re naked!. The hole was definitely man made and cut in a perfect circle and even sanded smooth on the inside. The wall was very thin and I wondered why the hole had not been patched. Jill just shrugged and we moved on, after I stuck the rag back in the hole. It didn't seem important since due to its location that wall of the structure seemed inaccessible from outside due to the dense woods. That evening when all of the scheduled activities were over, Jill and I put on our robes and headed for the.