Your girlfriend's hot daughter thinks she's home alone, but little does she know that you've let yourself in and are able to see her fully naked in the front room, masturbating to porn. You can't help but spy on her, feeling your dick getting stiffer by the second. Tracy soon realizes you're spying on her, but she really wants to finish what she started! So if you insist on watching her, you might as well have a wank too!