It's almost dizzying, the back-and-forth movement, the sensation of Kate's hands running over her body, Bill moving gently underneath her, and Beckett shuts her eyes against all of it. It helps, though, to feel everything that much more, and she arches against Kate again, her head tipping back onto her shoulder, her chest pressing into her hands.

It's inevitable when her pace quickens, desire heightening, everything building low and ready to spiral outward at a minute's notice. But she holds back, wanting to draw this out more, wanting to make everything that much stronger when it eventually happens.

One hand continues to steady herself by gripping Bill's shoulder, the other reaches back to clutch Kate's thigh, feeling it flex and relax behind her own as they rise and fall together, and when Bill leans forward to kiss her, she moans sharply into it.