She thinks she's all alone as she starts to tease her wet little pussy, but she doesn't realise her step-bro has just come home and is about to walk upstairs and catch her completely naked. She doesn't notice and he can't help but stop and watch... He spies on her through the bannisters, desperately trying not to get seen as she starts to finger her tight little pussy. His cock is twitching as he watches. Is your cock twitching too? She starts to lose herself as he creeps around watching her. Her eyes are closed as she throws her head back in pleasure with a wand on her clit, making her legs tremble as she starts to get closer and closer to cumming. He takes his chance to sneak even closer whilst she's not looking, peering around the door so he can see her pussy dripping and she cums hard! His cock is rock hard and he's almost ready to explode himself but just then his step-sis catches him right there in the act with a huge boner straining against his trousers...