I held my breath, and slowly prised open the door.
Nobody was home, I had triple checked that, but I was extra quiet nonetheless. The thing I was doing was so bad, if I was caught I'd never be able to live it down. I knew what I was doing was wrong, it was dirty and weird and what's more it was an invasion of my sister's privacy. So why was I still here? I couldn't resist. Months, almost a year, of fantasising about her, of picturing her. I just couldn't resist any longer.
I stepped over a pile of clothes - my sister was so messy - and tiptoed over to her chest of drawers. Her untidiness came in handy here. I had been checking the pile of old pyjama tops on the chest for almost a month, and she never touched them. I lifted them up, just enough so that I could slip the camera in, before letting them fall so that they were in the exact same position. I covered it up, so that the camera was invisible, but so that the lens still got a good view of the room. It was an expensive camera, a birthday present from my parents, and was very good quality. I lent over, pressed the record button, and crept out of the room.
What I was doing was so wrong, but I was doing it right. I had rehearsed the whole thing, even scouted the best location for the camera to sit. I had fully charged the camera, and made sure it had plenty of room for a long video. I had chosen the night when our parents were out, and when my sister was out at a party but had work the next day - this would guarantee that she would come in late and go straight to bed. Now all I had to do was wait until she had left for work the next day and collect the camera.
I was at University, but living with my parents because I couldn't afford board. My older sister, Kate, had come back from travelling completely broke, and so was living with us while she earned enough money to support herself. She spent a lot of it on parties, however, and so it was taking longer than she'd hoped.
I was gobsmacked when she came back at how gorgeous she'd become. Either she had matured late, or I had been too young to appreciate her before, but something meant that it was only now that I got to realise how hot she was. She was short, had long, brown hair and blue eyes. She was slim, but that didn't take any weight out of her sizeable breasts. I knew I shouldn't think about her in the way I did, but I couldn't help it.
It was taking it a step further, however, to film her. All porn had become dull to me, even the incest-based porn. I wanted her naked, I didn't care about other women. I just hoped to God I didn't get caught.
About fifteen minutes later, she came in through the door. She was stone sober, but she'd been out partying and was on a natural buzz, so greeted me with a warm hug.
"Good party?"
"Ah, Isaac, you have no idea. Amazing. I'm screwed for work tomorrow though." She sighed and rolled her eyes.
"Well, maybe you'd better get up to bed." I felt myself going red, but she didn't appear to notice.
"Yeah, you're probably right. Still, we'll catch up tomorrow!" She gave me another hug, a rare thing between us, and went off to bed.
I hardly slept the whole night. I kept wanting to sneak in and fetch the camera, but I knew I had to wait. I could not risk being discovered, I don't know what I'd do. But the thought of what was lying in wait for me... I couldn't help myself, I reached down and started slowly stroking my dick.
*****
Kate had to leave for work early the next morning, so when I got up around eight she was gone. I heard my parents downstairs eating breakfast and, judging that I was safe, I crept upstairs and into Kate's bedroom. It smelt of her perfume, and of clothes shops. I crossed to the other side of the room, and retrieved my camera.
After breakfast I went back up to my room to watch the footage. I saw myself creeping away, before hitting the fast forward button. A few minutes later, I was watching as Kate walked in. She looked tired, and didn't seem to be getting out any pyjamas, so for a moment I was worried that she'd go to bed without changing. But, soon enough, she started unbuttoning her shirt. She pulled it down over her shoulders, revealing a bright red bra patterned with lace. She reached round and undid the strap, letting the bra fall to the floor. My dick pressed against my trousers, so I pulled it out. It was rock hard. I began to rub it as she revealed her gorgeous breasts. They were large, but didn't sag - they were almost as perky without the bra as they were with. Her nipples were small but so enticing. They beautifully fell in with the curve of her sexy body, all the way down to the belly-button piercing.
