He caught Samantha trying to break into his house. He found out that she wasn't trying to get in to steal something. It turns out she was looking for a place to hide because she was trying to escape from the law. At first he thought about calling the authorities to turn her in. But then he looked her over and decided that maybe he could keep her for a few days to have a little bit of fun. Using rope, he tied Samantha good and tight. To keep her quiet, he stuffed and taped her mouth to gag her. He then left her hogtied with her big tits out on the floor as he left for a short while to take care of some business.