Sara stands by herself at the edge of the track, watching as they go round and round. Her face feels tight, she has an itch on her elbow she can't get to. Stood alone with her thoughts, she reminds herself to smile as they pass by. Her thoughts clouding over, her mind going somewhere she hasn't been in a very long time, but she can't let them see that. It's been two weeks since they found her in the desert. Since she was airlifted to hospital, her arm reset, pinned, and then cast. Grissom took leave to spend time with her whilst she healed. Helping her dress, shower, the basic human stuff one takes for granted when they have full use of both hands and arms. And here they are now with the gang, spending time together again, like the weird messed up family they have become these last 7 years.

Catherine skids to a halt in front of Sara, snapping her attention back to reality. She watches as Catherine jumps up and out of the go kart. Swinging her helmet at her side as she jogs off the track and through the gate to stand with her. She drops the helmet at her feet and ruffles her hair around in that slow mo. sequence shot found in most action films.

'You ok?' Catherine leans against the fence, her back to the screeching tires on the slicked concrete. She blows some hair from her face and stares intently at Sara. Noticing her zoning out two laps ago, she is glad she made the decision to call time on her racing career to check on the brunette.

'Yeah, yeah. I'm fine. You ok?' She turns her head slightly facing Catherine, a small smile on her face. Catherine turning her head, checking to see if the boys are still engrossed in their competition with one another, comes round and leans her arms over the top of the fence.

'You know, I thought I knew all there was to know about him.' Grissom overtakes Nick on the tight bend close to where the women stand, they both smile at his youthful appearance as he floors it, leaving Nick in his dust. 'I thought I had seen every version possible, every quirk. But… Out in the desert. Out there trying to find you…' She turns to see Sara, her face red and raw, her hair curly and carelessly pushed away from her face with her sunglasses. Catherine's train of thought stops, and she just stares at the young woman before her.

Why wasn't it obvious? How did she not know they were together. Sure, she noticed a difference between them, less overtime, less tension. Maybe she put it down to the gang being back together, maybe the whole thing with Nick and then Brass mellowed them all out that it just wasn't so unusual that everyone was getting on a lot better. She looks down, taking in the cast enveloping Sara's whole arm. She smiles and looks back up, squinting at her. 'You haven't had your hair that curly in a long time. I don't think I've seen it like this since you first came to Vegas?'

'Ah, yeah.' Sara holds up her injured arm. 'I can't straighten it right now. He's offered but he prefers it down and curly, so…' Sara clamps her mouth down, the pain relief making her somewhat looser with her thoughts. 'That's weird, I'm sorry I shouldn't have said that.'

'Hey!' Catherine holds her hands up in the hair between them. 'No that's fine, that I can deal with. Just, just don't tell me what he's like in the sac…' Grissom rolls to a stop in front of them. He flips open the visor on his helmet, eyes trained on Sara.

'You ok?' He hollers, the sound almost drowned out by the whizzing of motors behind him. She nods, Catherine leans forward and cups her hands around her mouth, she really wants him to hear this.

'She was just telling me about your sex life!' Grissom snaps his visor down, holds a thumb up and zooms off. She smiles towards the gang on the circuit and turns back to Sara. 'Has he told you what he said to us, how we found out?'

'No.' She turns, intrigued.

'He said that Natalie was blaming him for taking away the only person she ever loved… And that she was going to do the same to him.' Sara's face, a picture, mouth hanging open slightly.

'He said that, aloud?'

'In the layout room in front of us.' They pause, as a bang pulls their attention to a commotion in the far corner of the track where a young boy has crashed into the tire barricade. Eyes trained on the mass of bodies flocking towards the cries for help, Catherine clears her throat. 'He has told you that he loves you?' She turns to Sara, who's eyes refocuse onto her face. She nods, smiles shyly then Catherine notices her eyes brighten, her smile becomes wider. Turning her head quickly she sees Grissom and the guys walking over towards them. They watch as he pulls off the helmet and digs around in his pocket for his hat, replacing it on his head whilst joking with the guys about something neither of them can hear. Their eyes follow them as they all hand over their gear to a young spotty teenager behind the desk, the guys shouting over their lap times whilst staring up at the screen. All except Grissom who has moved off to the side to examine some shredded tires behind glass on the wall, reading some writing on a plaque.

'And he doesn't annoy you, like at all?' Sara laughs, her head dropping down to her chest, a giggle vibrates through her body. Catherine is infected by the sound, turning back towards her she begins to chuckle too.

'Like you wouldn't believe.'