”“Good to hear it.” Paul smiled. “Your mom and I are counting on you to get more A’s.” “Yeah, she’s been helping me focus.”“That y...ga stuff?” “More or less,” Sam said.“Well, goodnight.” Paul softly closed the door.“Goodnight, Dad.” Sam waited for the click of the latch and then turned back to his game. A few hours later, a soft knock at the door intruded on his game again. Sam paused it and spun his chair to face the door. “Yeah?”“Sammy?” The door opened halfway and Joyce’s head peeked through.. As they watched, a vertical seam appeared and split the oval, rolling back the wall to create a door into the interior. There was another yellowish oval a short distance inside. The setup for an airlock was unmistakable."Should we split up?" asked Kara.Mark considered. "No... Let's just radio base camp and go in together." They were through the airlock a few minutes later.The interior of the tower was a circular control room, with a core hub about half the diameter of the tower. There were. "That's right bitch. I'm only interested in that sexy little pussy of yours!"I couldn't help a little moan as I ran a finger over my silky damp lips. "Oh, you like that, do you? You like playing with yourself in front of me? I knew you were a nasty pervert!"The hand on my cock began to slowly stroke as I envisioned my sister's humiliation if I was to take control of her like this. "You sick freak! Now you're jerking off in front of me!"I stroked myself a little longer. I stared at Lisa, um, I. Davies felt his heart jump and was surprised that she wanted him as much as he wanted her. His hand then moved higher towards her dripping wet pussy and her rubbed on her clit thru her lace panties. She moaned in return to the simulation. " What time are u expected home?" asked Davis. When jen answered " my parents are out of town for the weekend " and gave him a little wink at the end. He felt his dick twitch in his pants. Davies grinned as he thought of all the bad things he was going to do.