Plead with John to stop again

Sam stared at his phone. He had to stop what was going on before Ellie's reputation was completely destroyed. When he'd confronted John face to face before he'd allowed himself to become intimidated and flustered. If he messaged him instead he would keep his cool, he'd win the argument and life would get back to some kind of normality. He began typing

John, please stop this. Do you know how close you were to getting caught at the bar earlier? It was all caught on camera. Please, don't do this to Ellie. You'll ruin her. She deserves better. If you want to come after me leave her out of this.

Sam paused. Would this message appeal to John's better side? Did he even have a better side? He breathed in and then pressed send.

He stared at the screen of his phone, before he was jolted back to reality as it suddenly vibrated. His heart skipped as he swiped to open John's reply.

Kind of busy at the moment. What do you want me to do?

Sam felt relieved. John was at least being reasonable. He relaxed as he began to type his reply.

Talk to her. Tell her it isn't working. Let her down gently.

John's reply didn't take long to come through.

Ellie can't speak right now....It's rude to talk when your mouth is full

Seconds later a picture appeared in his inbox:

Sam gazed at the picture of his step sister sucking dick... his eyes first falling on her hand wrapped around the base of John's cock as her soft lips encased the head. Sam could only imagine how good it would feel to have his penis buried in the warmth of Ellie's mouth. But then he noticed her eyes, those sweet, innocent eyes, that were convening one simple message: Thank you for allowing me the pleasure of giving you a blowjob. Sam would give anything to have a woman, any woman look at him like, let alone Ellie. And here she was, giving that look to the person Sam hated most on the entire planet.

But then a realisation hit him. Even in the midst of sucking his dick Ellie must have been aware that John was taking photos of her at her most intimate. And she'd obviously been happy to let him do it. A sinking feeling engulfed Sam as he realised how much Ellie must trust John, and what he might talk her into doing next. Suddenly his phone vibrated again.

Okay, I think she's ready to talk. What did you want me to say again, I got a little distracted but all finished now...

John's message was followed quickly with another picture:

Sam stared at the picture of his step-sister's luscious breasts coated with the cum of his tormentor. This was a new kind of hell, a potent cocktail of arousal at the sexual behaviour of the most attractive woman he'd ever met, guilt at it being his step-sister and horror at the things she was enthusiastically letting John do to her. One final message suddenly appeared on his phone.

Oh well, can't have been important. Anyway, I've got a special surprise planned for Ellie tomorrow night, which I think you'd enjoy watching. Be home and hidden in your room at seven, show starts at eight I'll let you know when to come and watch. You won't want to miss it... and if you do your life won't be worth living.

Sam collapsed as the magnitude of his defeat struck him. There was no reasoning with John, and things were going to get a lot, lot worse before this was over.