by Polly Fly
Robyn is going to old enemy Serena's posh penthouse with a plan to play dominatrix to Serena, extracting confessions and apologies for Serena's past misdeeds while enjoying the sheer sadism of what she wants to do to her. As it turns out, the sex is even better than Robyn hoped, but the fight doesn't go as she had expected. There's plenty of rough stuff, and lots of sex. 18+. ~2700 words.