"Good morning, Sergeant." He replied formally, placing the briefcase he carried on the floor beside it as he took the chair I'd indicated."Well sir, I...gather that you have been enquiring as to whether we'd made any progress in your case." Yes well, I am a little curious."I looked down at the unimpressively thin file of papers lying on the desk before me. I hadn't been part of the original investigating team at the time, but I had read the papers thoroughly in preparation for this encounter.. After my walk, I sat on my porch for an hour, looking out over the lake and thinking about my book. It was getting late so I decided to get into bed and read for awhile before going to sleep. While I was lying in bed, looking up at the ceiling, the quiet was shattered by screaming coming through the wall, “Ohhhhhhh! Yes! Fuck me! Fuck me! Harder! Come on, baby, give it to me harder. Ohhhhhhhhh yes, Fuck me! Fuck me!” I wondered whether she was alone and masturbating or did someone come to visit. I sit them each at a side so I can hit my sexy sibling from both sides with my warming weapons: a wooden ruler and a cat-o-nine-tails.I hit her in a steady rythm from left bum to the right and back, painting pink parralel stripes from left to right, next series is up and down.After every dozen I give her break and I caress her ass to lighten the pain and comfort her in this awesome attractive orgastic ordeal.After a few sets, indeed a love lips of Marjoleen are sexyly swollen and sticky white,. I think Lena had the same idea as I did to create an even greater tension to enjoy while we were alone and with that, we went back to watching the movie.We talked about what was going on in the movie and that got us both excited. We were also talking about the experiences that we had in the past, experiences that we still wanted to have ... I took a break, went to the fridge, brought a beer for each one and we went back to see the film, fully aware, she in my lap. My dick starts to come to life.