A wet lick on her inner thigh snapped her awake. She turned her head and saw Prince standing behind her again, licking at the pussy juice that was dripping down her thighs. He moved closer and began lapping at her cunt, forcing his tongue back inside her again.

"Prince," she yelled at him. "Bad dog. Go! Go to the kitchen!"

The dog ignored her. Without Mark there, he was free do to as he wished. And right then he seemed content to lick out her pussy. Anne tried again to move her waist as much as she could to get away, but the dog's long tongue never left its target. It lapped and lapped, sending a new current of electric urges through her body. She moaned out loud this time, aware of the shower still running and her own privacy.

She couldn't help herself and found her ass pushing back against the dog's probing tongue. She curled her hips until the lapping was centered on her clit. She moaned and writhed, her fists tight balls as felt a new climax building inside her. Just as she neared the breaking point, Prince stopped and moved away from her. Anne's eyes snapped open and she looked around desperately, only to find Prince at Mark's feet, tail wagging happily at its master.

"Good boy," he said, patting the dog's head and scratching his sides. "Such a good boy." He looked over at his sister with a smile of pure smugness and led the dog to the back door and outside. When he returned he stood over his sister and stared at her with lust in his eyes.

"Told yeah you would like that," he laughed and started to untie her. When she was free, Anne stood haphazardly up, still stiff and weak from the night in the chair. "Go get showered and put on what I lay out for you. It'll be ready in your room. You have half an hour. Don't be long." He smiled sweetly. Anne glared at him but said nothing as she left thankfully for the bathroom.

For the remainder of the morning and most of the afternoon Anne almost enjoyed herself. Mark took her out to breakfast, and then lunch. He took her to various shops and stores, buying her clothes and small pieces of jewelry and basically whatever else she desired.

Through it all Mark made pleasant small talk about anything and everything. Anne would have thought that he might have felt guilty about what he had done to her, that it was all over, had it not been that Marks's eyes were ever devouring her body. He had chosen for her a pair of black high heels and a thin, one piece summer dress that was cut low in the front and was hemmed up high on her thighs. Every time she thought he was being genuinely nice, all she had to do was look at the lust in his eyes to know better.

In the late hours of the afternoon he took her to a mall on the far end of the city, one that neither of them went too very often. It seemed a little suspicious to Anne, but there was nothing she could do. He led her to a large department store and told her to pick out one piece of clothing, anything she wanted. Anne smiled happily and dove into the isles, pulling pieces from the racks, not equating herself as a prostitute with Mark buying her sex with clothes. She escaped to the dressing room, thankful that Mark didn't interrupt her as she changed outfits and viewed them all in the privacy of the little room.

At last she emerged with a bundle of clothes in one hand and a single dress in the other.

"I'll take this-" She was cut off as Mark, seeing the way clear, clamped a hand around her mouth and forced her back into the small change room. She dropped the clothes as Mark spin her around roughly bent her over. Flipping the short dress over her ass and onto her waist, Mark undid his pants and dropped them to his knees.

Mark pushed the head of his cock into her cunt and, grabbing her hips in both hands, forced the rest of his cock slowly inside. He moved slowly for a few thrusts until he felt her moisten, then fucked her as fast as he could in the small room. Anne shuddered and grabbed onto the shelf for support as her brother fucked her from behind. He jerked in and out of her in quick, short thrusts, one hand slipping under her to grab a tit while the other balanced on her waist.

Within a few, short minutes he was sweating from the effort but could feel his orgasm close at hand. Pounding into her, he came quick and hard, pumping his seed deep into her cunt. He groaned as his knees buckled and latched onto her body for support. He chuckled and pulled himself out as he licked her ear.

"Thanks, sis," he sneered and pulled up his pants. Checking to see that the way was still clear he stepped out and closed the door behind him.

Anne shivered and slumped against the wall. Mark's cum dribbled down her leg. With disgust she realized she had to clean herself up and pulled one of the discarded outfits from the floor. She grimaced as she wiped his cum from her leg and stuffed some of the clothing between her legs to sop up the mess and prevent further leaking.

Anne felt a little disgusted, and a little naughty, as she placed the dirtied clothing into the pile and left them all on the bench. Retrieving the dress she intended to buy, she stepped out to find Mark waiting against a pole, like a boyfriend waiting impatiently for his girlfriend to finish her business. He put his arm around her shoulder and pulled her against him when she tried to pull away, and led them to the cashier.

Mark led her through the mall, still attached to her like a lover. Now she knew why Mark had chosen this out of the way shopping mall to take her. They were unlikely to meet anyone they knew, and Mark could act however he wished with her. She felt sick to her stomach, but let him lead her around.

He stopped outside a large shoe store and guided her in. "Might as well get some shoes to match your new dress," he said as he kissed her ear.

An older man who seemed to be the manager jumped forward to take care of them when he saw pretty Anne in her short dress enter. He was a medium sized man, slightly balding and showing generous signs of age induced spare tire around the waist from too much junk food.

Anne took a seat with Mark standing close behind her and pointed out several different styles. With each pair, the man became more and more bold, his hand resting higher and higher on her leg until it reached her knee, then her thigh.

She was painfully aware of the unwelcome touching, and even more aware that each time he placed a shoe on her foot he would lift her leg and stare under her skirt at her bald, naked pussy. He began to sweat, though the effort was almost nonexistent.

Mark was also aware of the man's attention to his sister. The shoe salesman looked up more than once to find Mark watching him, but each time Mark responded to his nervous glance with a nod and a smile. Embolden even more by this encouragement and Anne's lack of negative reaction, he licked his lips nervously and slid his hand up her inner thigh.

Anne closed her legs before he could touch her pussy and squirmed back, but said nothing. Behind her back, Mark smiled and gestured meaningfully towards the back storage room. The man looked to it, then back to Mark, sweating even more.

"This style seems a little uncomfortable," he told Anne, trying to retain his professional air. "I think I have some in the back with a different toe that you might like. If you'd like to follow me." With a nervous glance at his two employees the man led the way to the back room.

Mark nudged Anne, and she reluctantly got up to follow. Mark had to push her twice to get her all the way inside, and the man closed and locked the door behind them.

Mark grabbed her from behind and clamped one hand over her mouth, just like he had in the dressing room. But this time, instead of bending her over, he pulled her to the floor.

"You want her, don't you," Mark told the man. The man only nodded and stared down as Mark held Anne to the floor. "Come on, take her then. She's yours."

At first the man hesitated, uncertain if Mark was serious, or if he was just toying with him. But when Mark grabbed the bottom of her skirt and pulled it up, revealing her lovely naked pussy, his mind was made up. He stripped off his pants and underwear and moved towards her.

It took both of them to hold her down, Mark's hand still over his sister's mouth as she screamed into it. The fat, sweating man crawled between her legs and took his cock in hand. Mark had to keep from laughing as he saw the puny thing, maybe 5 inches long, push into her. Mark wondered, as the man entered his sister, if he realized that it was another man's cum that made the entry so wet and smooth.

Anne continued to try to scream and fight, biting and cursing into her brother's hand. But when the man lowered all of his weight on top of her and started to fuck her in earnest, she gave up the fight. Mark removed his hand, letting her head roll to the side, and took a step back to watch. The large man totally covered his little sister. All that was really visible was her legs, splayed out to the side of his humping body, and her head, eyes wide in disbelief.

The older man didn't have much style, Mark thought curiously. His rhythm was all off, and he huffed and sweated profusely on top of the trapped girl. With his tiny cock and the treatment Anne had received that day, he doubted that his sister could even really feel him inside of her. And he doubted very much that she could be enjoying this. All the better, he thought, because he was enjoying it immensely.

Not surprisingly, Mark thought, the older man came quite quickly. Looking at his watch he was surprised that not even five minutes had passed before he grunted, tensed a few times, and went limp on top of her. Smiling, the pervert started to lick Anne's face, much to Mark's amusement. He could have stayed and watched what would have happened next, but he was tired, and starting to get hungry again.

"Alright, bud," Mark said as he stepped forward. "Fun's over. We gotta go."

The man looked at Mark, slightly angry at first, then uncertain as to what to do. Finally, he pushed his sweaty body off of Anne and started to clean himself up. Mark pulled his sister to her feet, and without even straightening her clothes, pushed her for the door.

"Thanks," the man wheezed. "That was great."

Mark smiled and opened the door. All eyes in the store stared as they saw Anne, quite disheveled, and for those who looked close enough, with a glistening stain on her thighs. Mark didn't give them a second look, but paraded her out the door.

Anne thought she could die at the moment, and would if Mark hadn't taken her straight to the car. Her mind couldn't quite grasp what had just happened.

Mark stopped for fast food, which Anne ate without appetite, but ate nonetheless. By the time they got home it was getting late. Anne sighed when she saw the clock. The day was almost over. It was all almost over.

"It's been a great day, Anne," Mark teased. "But pretty tiring. Know what would be really great about now?" Anne glowered at him. "A nice hot shower. And I think I need someone to wash my back for me."

"Fuck you," Anne snapped.

"Oh, I will," Mark sneered and dragged her roughly up the stairs.

He pulled her dress over her head and shoved her into the shower, turning just the cold on. Anne howled and quickly adjusted the temperature, giving Mark time to strip and climb in behind her. His cock throbbed as it bumped against her wet ass, but he didn't want to touch her with the sweat and cum of that old man all over her. He pushed her under the water and left her alone.

Anne gratefully allowed herself to be swallowed by the warm, soothing stream of water. She accepted the soap from Mark and washed all memory of what had happened away. Under the water, she allowed herself to be taken away to a better place, a place where she was free from this nightmare she had allowed herself to get into. She closed her eyes and started to cry.

Suddenly there were strong arms around her, holding her close. Lips, so full of passion and desire met hers, and she kissed them back. She wrapped her arms around this person who would protect her, and allowed him to take her from the shower and carry her to her room, all the while, never releasing their kiss.

Mark laid Anne tenderly on the bed, all at once surprised and amused and aroused. He slipped in behind her and nestled her neck, tasting her soft skin. Anne moaned and pressed back, her eyes never opening. She allowed Mark, even helped him, to lift her leg and slip his cock inside of her. He fucked her slow and long in the spoon position, his arm around her side, his hand feeling her soft breasts, his mouth kissing and licking.

He rolled her over onto her back and climbed on top of her, his lips kissing hers, his tongue twisting around his sister's. He slid his cock back into her pussy and fucked her long and slow into the night. When at last he came inside of her, he pulled out and slumped down on the bed, exhausted. Like lovers, they fell asleep in each other's arms.

Mark awoke with the sun bright in his eyes. He looked over and found his sister's head resting on his shoulder, her face peaceful and happy. He smiled to himself. That look would soon change. On the far side of her he spied her alarm clock and almost gasped. It was nearly 11:00 a.m. Something Mark didn't tell his sister was their parents were due back just before noon, which was anytime now. Damn. He didn't mean to sleep so long. But he still had the chance for one final fuck.

He moved closer and rubbed a finger along her clit and down to her snatch. Rubbing at the opening, he slipped a finger inside her cunt and instantly felt her moistening at his touch. She must be dreaming, he thought. He kissed her and she stirred and rolled her head back, opening her eyes sleepily.

"Mmmm, morning," she whispered as her vision cleared. "Mark?" She blinked, unsure if she was seeing right. Memories of last night, of fucking him so tenderly flooded back to her. She made a face like she was about to throw up.

"Morning, sister," Mark smiled in amusement. "Sleep well."

Anne ignored him and tried to climb out of the bed, but he caught her arm and dragged her back.

"Where do you think you're going?" He snapped.

"Look, I did what you wanted," she whined to him. "Now leave me alone."

"Can't," he laughed. "We made a deal. And the weekend isn't over yet. Don't tell me you're going to quit so close to the end." She sighed and looked at him desperately. "Okay, I'll make you a deal. You only have to fuck me once more, and the deal is done." She glared at him. "But you have to fuck ME."

"What do you mean?"

Mark laughed and lay back on the bed. "I mean, I'm just going to lay here. You have to suck me off, get me nice and hard, and then ride me until I cum. That's the deal." Anne made the face again. "It's that or we call the whole thing off."

She sat in silence for a long time. "Okay," she finally whispered. Mark nodded and pulled the covers off of him, revealing his limp cock.

Anne sighed and bent over, her long hair trailing on his skin. His cock started to twitch already, but her fought against it. He wanted to enjoy this. Anne decided that if she was going to have to fuck him, then she would make damn certain that it was quick. She opened her mouth and swallowed his flaccid penis and his balls, taking it all into her mouth in one bite. She licked at his balls inside her mouth and sucked hard. Against all his will, his cock started to harden. She spit out his balls and started to bob her head rapidly, making him fully hard as fast as possible. He tongue worked over his shaft, dancing around his head. It felt so wonderful that he briefly considered cumming in her mouth again.

Satisfied that it was fully erect, Anne stopped sucking and sat up. She looked down at Mark with disgust and swung her leg over his hips. Mark grinned up at her and put his hand behind his head to watch as she took his cock in hand and guided it to her cunt. Slowly she sat down, taking his entire length into her. She moved slowly at first, not wanted to be hurt like all the times before and started to rock back and forth on his dick. Mark looked up and marveled at how beautiful his sister was in the morning light.

His hands reached up and cupped at her tits, squeezing and kneading at the flesh. Anne worked her brother over with every trick and talent she had learned, trying her best to bring him off fast. She flexed and squeezed her pussy around her his cock. She raised her hips so that he was nearly all the way out of her, then tightened her cunt muscles and forced his cock back inside. She bounced and rutted on his cock with a fury, her breasts flopping around in a lewd, erotic display that drove Mark wild. Through it all he remained nearly motionless except to occasionally fondle a breast or squeeze her hips.

Half an hour later Anne was almost in tears. For her it had been a trial in frustration as her brother would not give in. For Mark, it had been an incredible screw. He was prepared to let her go, to cum inside her and end her torment, when the sound of a garage door opening rattled through the silent house. Anne pulled of Mark's cock and leaped to the window, staring down in horror and relief as she saw her parent's car waiting for the slow door to rise.

"Get back here," Mark growled. "We're not done yet."

"But mom and dad are home," Anne said, incredulous to Mark's statement.

Mark, infuriated, leaped to his feet and flung his sister to the bed and jumped on top of her.

"I said one more time," he yelled as he shoved his cock back into her. Anne gasped in pain as Mark pounded her, shaking the whole bed with his furious attack. He fucked her with a purpose, to cum inside her as quickly as possible. The headboard banged ad rattled against the wall as he fucked her. Anne cried out and grunted in pain, but Mark didn't care.

With one, final, deep thrust, he came, filling her again with his incestuous sperm. Mark grunted, glared down at Anne and pulled away. Flinging his robe on, he didn't even look back as he went downstairs to greet his parents.

Anne watched her brother leave and curled into a ball, very aware of her raw, throbbing cunt. Her breathing slowed and she smiled to herself. She couldn't wait until Mark caught her doing something naughty once again.