(WARNING: This is a work of fiction that contains non consensual scenes, if that bothers you stop reading now!)
Mary and Sam had always been close growing up. Twins, with the normal closeness associated with such things. Three years ago when the two were fifteen, their mother had died. Despite them being the same age Mary had always felt the need to look out for her often timid and self conscious brother.
To the outside world their father James was a good man. He was salt of the earth, and appeared a good dad to the two kids, but the outside world didn't know what went on behind closed doors. He was violent, he ruled Mary and Sam with a relentless iron fist. They never went without, always had nice clothes, the better to hide the truth to the outside world, but he was a sadistic, mind controlling tyrant and a pervert. He often tormented them both over the years.
Mary, now eighteen was engaged. Her fiance Carl was twenty years older than her. She cared for him, and more importantly he protected her, and she knew that he loved her. To Carl, her father James was kind, and always ready to help Mary and Sam. Sometimes Mary complained to Carl of the difficulties at home, never going into too much detail, for fear of retribution from her father, but she knew that he didn't really believe her. He treated her like a naive child that didn't really know much about life. He was significantly older than her, and that made it easy to disregard her complaints it seemed.
Sam was a quiet boy, he was timid and meek. He was so scared of James, and his vicious tongue, and had become very introverted and withdrawn. Mary worried about him greatly, and she knew that without her he would not cope well.
James was an out of shape man and lately had gotten even more so, and he didn't wash as often as he should. However he always made sure that the house was kept spotless by the two youngsters, in case anyone came by. He always had to present this perfect family image to the outside world. If anything was out of place, or even a slight mess left anywhere, there was hell to pay. Usually poor Sam took the brunt of it more than Mary did. She thought this was because he enjoyed picking on her brother more than her due to his tendency to just take the abuse, without complaint or resistance. Not that she was very resistant herself, but she would at least try to stand up for herself, and her brother of course.
Mary had noticed James leering at her lately after their recent birthday. She knew that she was quite a pretty girl, her growing breasts certainly caught not just her fiancés eyes, but it unnerved her how often she caught her father staring lately. She could not wait to get married and leave, although she did worry about how Sam would fare on his own. Carl of course could not see that Sam was in danger of being damaged for life if she left him. "You are worried about nothing Mary," he would say. "You have too vivid an imagination."
So life continued, with Mary and Sam afraid almost to breathe in their own home. Walking on eggshells around their increasingly aggressive and agitated father.
One afternoon Mary came home from work. Her happiness from her momentary escape from the torments at home, the torments of her asshole boss hardly comparing, nonetheless she enjoyed her menial job. If for no other reason than it got her out of the house.
She walked into the livingroom, and to her utter shock and horror, there was Sam naked, lying on the floor. Her father stood over him, his belt in his hands. The marks on her brothers back were deep red. She ran to her brother, trying to comfort him.
Her father said "Leave him alone, he's being punished." Pushing her aside, as he raised his hand to strike down again.
"You don't punish someone like this," she shouted.
"He didn't wash the dishes before he went out," James said, as though this was a justifiable reason.
Mary cuddled her brother, trying to cover his nakedness. "Do not cover him Mary, he deserves to be punished."
Mary was angry, and shouted at James, "That's not punishment, that's just degrading, he's done nothing to deserve this."
Sams body was covered in red marks where the belt had struck. Mary went to get a blanket to cover him, but James stopped her. "You sit right there Mary, and listen to me. You two are always disobeying me all the time, it's gone on long enough, and I'm not gonna put up with it any longer. Do you hear me?"
Sam was blubbering, and crying, he could not answer. Mary said, "We always do as we're told."
"No Mary you don't," he replied. "I will be respected, and obeyed. Do you agree? His question was harsh and his tone frightening."You will give me respect, you will do as I say."
They both nodded utterly afraid. "Now we'll see if you really are willing to obey," he went on. "Mary get undressed."
Mary knew that he liked to look at her, and how perverted he was. This was unexpected though, she hesitated looking at her father her eyes pleading with him. "Well?" He asked her. "Are you going to do as you're told like you promised?"
She did as she was told, she slowly took off all her clothing. She was nervous and frightened, but she decided to be strong, if he focuses on me, then he will let Sam be, she thought to herself. She stood defiantly naked and icy cold, looking at him with distaste and hatred. He sort of groaned, and drool was running from his mouth as he eyed her body. He began unbuttoning his shirt, and his big pot belly was now on display. He took off his pants, and then his filthy boxers, and threw them on the floor.
Mary still stared at him arrogantly, but really she had closed her mind to what she was seeing. His body was disgusting, at first, but she couldn't help the physical reaction to seeing her father naked before her, she softly moistened as she stared at his naked form, her eyes fixated on his engorging cock. It was slowly growing to full size and was impressive and to her shame made her mouth water a bit.
