The walls were thin and the muffled conversation continued as the disembodied voices rattled on into the distance. Molly heard the distinctive sound o... her sister’s bedroom door closing. Annabel had a new tutor, Daniel, the neighbour’s son. At twenty, he was two years older than the twins. Mum and Dad had decided that it was the only way that Annabel was ever going to pass her final mathematics exam. As with all things, Molly had seen this as a massive injustice, one of many in fact. Molly. There was really no reason for him to be doing so, unless they were talking about her for some reason, which now made her even more suspicious. She had liked Grace, one of the few teachers she had that she had liked, and had even grown to trust. She'd even been over to Grace's place a couple of times, helping out filing paperwork, or loading grades and assignments as a teacher's aide. She wasn't even aware that her father had ever met Grace before, let alone talked to her. And now ... here he. He pulled himself off of Kim and came back around to the foot of the bed were he once again got a good look at his sex slave as she lied there blouse now open in beautiful lingerie. He pressed the tip of his cock to the moist spot of her panties and dry fucked her briefly before yanking the panties to the side. She let out a gasp as he pressed his tip passed her wet lips and entered her pussy. She was so turned on and wet that his cock slid in and out of her pleasure hole with no effort. He. All cleaned up, I washed my face and headed back to my room. I couldn't help myself but I stopped outside of Sarah's bedroom. This was very risky considering I was still naked but curiosity got to me. However as I listened there was no sound, no moans coming from behind the door. I walked back to my room and to be honest, a little disappointed. I slumped back into bed and got under the covers. "OK Jamie get it together" I said out loud to myself "Sarah is practically your sister and you can't.