His Sister's Keeper
Copyright© 2026 by ghostwritten after dark
Chapter 3
Incest Sex Story: Chapter 3 - Joey and Gwen Tanner, two close and loving siblings, are excited when they arrive for a six week summer vacation near a small lake. One lapse in judgement though, could turn their whole world upside down. To make it through the summer, they'll have to do things they never imagined. Can their bond overcome the challenges ahead, or will they be warped and manipulated into something they never expected.
Caution: This Incest Sex Story contains strong sexual content, including mt/ft ft/ft Teenagers Blackmail Coercion Drunk/Drugged NonConsensual Heterosexual Fiction Incest Brother Sister BDSM Humiliation Light Bond Rough Spanking Gang Bang Group Sex Anal Sex Analingus Cream Pie Double Penetration First Facial Oral Sex Petting Water Sports
Gwen woke up the next morning; her head hurt, and she felt strange. She found herself in her bed at the rental house with no memory of how she got home. Turning her head, she saw the clock on the nightstand said 11:24. She wasn’t under the sheets in the bed, though. Instead, she was covered with a soft fleece blanket. Looking underneath, she was still wearing her yellow sundress.
A shape moved in the corner of her room. The room was dark, with only faint light filtering in through the closed blinds. The person was sitting on a chair, slumped against a wall. She almost thought they were dead except for the gentle sound of weeping.
“Are you ok?” asked Gwen, sitting up and trying to take stock of what happened last night.
The shape moved, twisted; an arm wiped tears from tired red eyes. The familiar face looked like it had aged five years. He was still dressed in the same clothes from last night, but clearly something was very wrong.
“Good, you’re awake. How are you feeling?” Her brother said, wiping his face with his hand again.
“Uh, a little weird and a lot confused. What happened last night, and why are you so upset?”
As she said it, she felt an overwhelming sense of dread creep upon her. Everything felt wrong, the clothes, the memory loss, his tears...
He stood up and walked toward the bed. His face was wet with tears; his hands trembling.
“I’m sorry. I’m so, so sorry. I didn’t listen,” he whimpered softly, taking her hands in his. She’d never seen her brother this upset.
“Joey, what happened? Where are Mom and Dad?” she feared the worst.
“They’re fine. Left an hour ago to go hiking somewhere. They don’t know. They can’t know.”
“Joey, you aren’t making any sense.” Gwen pulled off the blanket and shifted a leg to stand up. She felt a pain between her legs, and she flinched. It was then she realized she wasn’t wearing underwear. A new fear struck her like a freight train.
“Joey. What happened last night?” her voice was filled with fear.
Her brother wept harder, “I di- I didn’t know.”
Gwen’s eyes stung as tears started streaming down her face. She’d lost something. No, they stole something she could never get back. She was filled with a mix of emotions from sadness to anger. The violation of her body and loss of innocence was hammered home as she placed a finger inside and felt pain.
“Do you know who did it?” she asked, her voice was barely a whisper. Shock and anger were the only things that kept her from breaking down.
Joey nodded and cried harder, wiping his nose on the sleeve of his shirt. She was going to hate him forever, and he wouldn’t blame her.
“Uh I – I did,” he confessed.
This caught Gwen completely by surprise. She never in a million years would think her brother was capable of something like this. Not to anyone, let alone her.
“You? You raped me?” Gwen’s voice sounded like that of a small child. Hearing her voice filled with betrayal and the words used cut Joey even deeper; he started bawling.
“I didn’t ... I didn’t know ... I swear!” he wailed wildly, holding his face in his hands. “They ... they tricked me! You were right, Gwen. I’m sorry!”
Her brain hurt. She couldn’t process anything. It was all too much, and she couldn’t understand any of it. All she knew was her brother, who she loved and trusted more than anyone, betrayed her in the worst way possible. She pulled her hand away from his.
“Joey. Get out.”
“Gwen, please let me exp-”
“GET. OUT!” Her words were pointed and clear. Joey stood up slowly, his shoulders and back slouched over, and left her room. She broke down.
She cried for half the afternoon in her room. She didn’t eat; she wasn’t hungry. Eventually, she opened the door to take a shower. She found the house empty. Joey’s bedroom door was open, but he wasn’t inside. She wasn’t ready to talk to him yet anyway.
She stripped and turned the water to the hottest it would go. She stepped under the near scalding water and sat down. Her skin turned a pinkish red from the heat, but it still didn’t make her feel any cleaner. She scrubbed hard, whittling down nearly half a bar of soap till her skin felt dry and chalky. But she still felt dirty. She wondered if she’d ever feel clean again.
Neither of them spoke to each of the rest of the day. With the exception of dinner, they were never in the same room. Their parents noticed immediately that something was wrong, but neither Joey nor Gwen would say what had happened. Without more information, both parents hoped the two would sort it out quickly.
The next day, Joey went out and sat by the dock, his feet dangling in the water. His mind was consumed with guilt and anger for his actions. Gwen looked out her bedroom window and saw him there. She still didn’t know what to think.
‘Why can’t I remember what happened?’ she said to herself. She only had two drinks. She shouldn’t have passed out from that. None of it made any sense. Joey’s rambling protestations and apologies played on a loop in her mind. Finally, she knew she needed to know the truth. She walked outside and sat next to him on the dock, her toes just touching the water if she tried.
“I don’t remember what happened,” Gwen said in the first exchange they’d shared in over twenty-four hours.
“It’s my fault. It’s all my fault,” Joey repeated.
She looked at him. His eyes were wet with tears. She could tell the guilt was eating him alive, and she felt a pang of guilt herself. He looked more gaunt and tired, like he hadn’t been sleeping. She hadn’t either. She was afraid she’d wake up without a memory again. She needed to know what happened.
“Joey, what happened that night?” she asked softly.
Joey looked at his sister and then back down to his feet in the water. He didn’t want to relive that night. He wanted to drown it and them deep at the bottom of this lake. Pretend it never happened, so when they got home, things could go back to normal. But he knew they’d never be the same again.
“They tricked me. It was all a setup,” he mumbled. “I never should have left you alone, I never would have...”
“Joey, I need you to tell me exactly what happened.” She was trying to keep him on track.
“We set you up,” a female voice said from behind them. They both turned to see Rachel standing there in blue-jean shorts and a grey T-shirt. Her long curly hair was tied back in a ponytail.
Joey jumped to his feet, water splashing across the dock. His eyes burned with fire and rage.
“What the fuck are you doing here!” he yelled angrily. Gwen, still uncertain about what actually happened, had to hold him back.
Rachel held up her hands in surrender. “Please ... I’ll explain.”
“My brother and his friends are cruel, sadistic bastards. They do whatever they want, and no one stops them. Gwen, what’s the last thing you remember about the other night?”
“You and my brother going upstairs, then getting a drink, I think. It gets hazy from there,” Gwen recalled.
“Todd or one of his friends got you that drink, didn’t they? They drugged you to put you to sleep. My job was to distract Joey long enough for you to pass out and be put on my bed. Someone would knock on the door to let me know when things were ready,” Rachel explained. Her face was emotionless as she described her side of the events. It was almost like she was a different person.
“But why? Why us? Why do this? I don’t understand why that’s funny at all.” Gwen was getting angry, hearing how she was just a plaything to them.
Rachel inhaled, “Because you were cute and your brother looked like an easy mark. They do this every summer. Find some girl and use her while she’s here. Extortion, blackmail, whatever works. They sent me out after you when you left the coffee place to gather more info. Joey seemed so desperate to get laid, they figured out a plan using me as bait.”
“If you knew what they were going to do, why did you help them?” Joey asked, his hands balled into fists.
“This is going to sound cruel, but after years of this, I thought ‘better you than me’, at least for a little while.”
“They don’t...?” Gwen asked, her mouth agape.
“They do. And have since I was fourteen. Summer is my only break, so yeah, I help them.” Rachel lowered her head in shame. Gwen couldn’t help but feel for her. She couldn’t imagine what that must be like.
“If that’s the case, why are you here telling us?” asked Joey.
Rachel swallowed, she knew this was the hardest part. “Because for the first time, I felt guilty about it. I watched you break down after they turned the lights on, Joey. You looked so distraught like no one we’ve done this to before. After I helped you both home, I thought a lot on my way back. Anyway, you know what happens next...”
Gwen waved her hand, “I don’t. What the fuck happens next?”
“Oh, you didn’t tell her anything yet,” Rachel said, looking at both siblings. “They have you on video fucking, they’ll post it to all your social medias and online if you don’t obey. They’ll do it, too, trust me. Gwen, you’re expected to service them whenever they want, starting at a private party on the first of July.”
“That’s three days from now!” Gwen shrieked in fear.
“Yes. If you refuse, tell anyone, or leave before your original date, the video gets posted. Since you’re both here for six weeks, they’re giving you a few days to prepare. Trust me, they usually aren’t that kind.” Rachel spoke flatly to both of them; there was severity and sincerity in her voice. They both believed her.
“And what exactly am I expected to do?” Gwen asked nervously.
Rachel explained, “Whatever they want. And they want to fuck you. Humiliate you. Degrade you. Whatever gets them off. Todd has this whole bullshit philosophy ... but I won’t go into that.”
Rachel then turned to Joey. “You’re expected to watch; even join in. They think it’s funny for you to fuck your sister.”
Gwen was disgusted with the thought. “So, they’re going to rape me and make him watch?”
“They don’t view it as rape, since you’ll be coming willingly. That’s why they didn’t touch you when you were passed out. They let him do it,” said Rachel.
“I’m not there willingly, we’re being blackmailed. And why should he join in, that’s gross!”
“Are you on the pill?” Rachel asked bluntly.
Gwen realized with everything, she hadn’t thought about getting pregnant. She shook her head no. Her fear was now upgraded to terrified. She didn’t want to have kids anytime soon.
“Thought so. That’s why. They’re going to do whatever they want, and they don’t use protection. Their gross rationale is you won’t say anything if there’s the potential the kid is your own brother’s. If you get knocked up that is, and with how long you’re here for ... I’d start planning how you want to deal with that likelihood.”
Rachel’s explanation of their gross plan showed both the Tanner teens the kinds of people they were dealing with. There was a sick logic to the way they operated, that gave them all the advantages and left none to their victims. Neither one could think of a way out.
“So, that’s it then? I’m just going to be a fucktoy for those three assholes all summer?” Gwen had progressed from angry to furious at the indignation of the whole thing.
Rachel nodded her curly black hair. “Unfortunately yes, or whoever else they decide to share you with. Unless you can find a new girl to take your place, that is. They love tormenting new people, so after a few weeks, it’s less fun for them. I’d say just prepare yourself for a rough summer. At least it ends for you in six weeks.”
“Fuck! This is all my fault,” Joey cried out. “Why didn’t I listen to you?”
Rachel was confused, “What does he mean?”
“I had a feeling before going inside your house. Just a gut feeling that something wasn’t right. I told Joey not to leave me alone.”
“But I did!” he cried out. “I fell for your lies. Did you even like me at all?”
Rachel replied honestly, “I don’t know. You seemed nice and sweet, but I know we’ll never find out. You’ll hate me forever and I won’t blame you.”
“God damned right I blame you,” Joey’s voice rose angrily. Gwen reached out and took his hand. They were all victims in this, even Rachel.
Knowing it was best that she left, Rachel turned to leave. “I’m sorry to both of you. July 1st, at 8:00pm, my house. If you’re late, they post what they have. See you then.” With that, she walked away leaving the two Tanners on the dock shaken and upset.
Joey stayed there, looking out on the lake. He thought about diving in to see how long he could hold his breath at the bottom before his air ran out. Gwen, now knowing her fate, walked back inside and collapsed on her bed. She desperately clung to the hope she could find a way out of this. Some way to make them pay. Or some way to accept this cruel twist.
June 30th arrived faster than either of them could believe. They were talking again, which made their parents happy. From the outside, it seemed like they’d made up. To an extent, they had, but they were really trying to work together for a solution before tomorrow. Neither of them had seen Rachel, Todd, or his crew. Joey wondered if they were keeping their distance in case it had told what was going on.
They sat in the hot tub that night, desperately searching for any crumb to cling on to. Gwen was slowly coming to terms with her reality though, as every minute ticked by brought her closer to the inevitable. She wasn’t distraught but more resigned as the clock struck midnight.
“That’s it,” Gwen said as she looked at the time on her phone. “I guess there’s nothing we can do now.”
“Gwen, this isn’t a magic wish. There’s no ’it ends at the strike of midnight’ clause.” His overwhelming guilt made him want to keep going. After three days and very little sleep, his brain was mush.
“It’s over, Joey. We’ll go tomorrow and I’m going to be fucked repeatedly. You’re going to have to watch and that’s going to be our miserable summer for the next month and a half.”
“Gwen...”
“I’m getting out ... I think I need to go to bed.” Gwen stood up, and water from the hot tub rushed off her body.
Knowing what was going to happen, Joey couldn’t help but watch his sister’s body before she walked away. By tomorrow at that time, he’ll have seen it defiled and likely have been part of it. For a brief instance, he noticed how sexy her body really was. He cursed himself as his erection grew thinking about seeing it all exposed tomorrow.
He dried off, shut off the lights and the hot tub, and went to his room. Gwen’s bedroom door was closed. She’d given up, he thought to himself. He wasn’t ready to throw in the towel quite yet. He closed his door and changed into an old pair of gym shorts he used for sleeping and crawled under the sheets. He lay there trying to think of something ... but nothing came.
In Gwen’s room, she was looking at herself in the closet mirror. She pulled off her bikini and stared at her naked body. Would she look different after? Like, would sex like what was coming change her somehow? She touched her breasts, feeling them in her hands. Her nipples hardened as she rolled them between her thumb and forefinger. She hoped they wouldn’t be too rough with her.
She moved her hands down her body, looking at the tuft of light brown hair between her legs. She’d never bothered to fully shave down there, since she hadn’t expected to show it to anyone. She decided not to tomorrow either. They didn’t deserve that. They could do whatever they wanted to her, but she got to choose what it looked like, damn it.
Her fingers then spread open her outer lips as she awkwardly looked at the pink interior. She wasn’t a virgin anymore; she knew that, but she didn’t remember it. Did it count if she didn’t fully experience it? What if she got pregnant? How could she tell anyone? What could she do about it? She felt her heart rate climbing along with her levels of panic. It wouldn’t do any good, she kept trying to tell herself over and over again. She put on a pair of basic cotton panties and her oversized night shirt. It belonged to Joey, but when it became too ratty to wear, he gave it to her. It always made her feel better. She crawled under the sheets and lay there staring up at the ceiling.
Across the hall, Joey wasn’t sleeping either. It was 2:00am and his brain just couldn’t shut off. It wasn’t like any of the ideas he had would work. Smashing their phones or calling the cops would solve nothing. It would take just one of them to post something and both his and Gwen’s lives would be ruined. He could protest and complain all he wanted, explaining that she’d been drugged and he’d been tricked, but he knew no one would believe him. Lies travel faster than the truth. They were doomed.
Knock Knock
A very faint sound came from his bedroom door. He was about to get up to check when the door slowly crept open.
“Are you awake?” she asked softly into the darkness.
“Couldn’t sleep either?” he asked.
“No. Can I crawl in bed with you?”