Izzie is trying to convince Denny's father that they knew each other for months, but he cuts in, wondering about why she'd quit immediately upon his death. He mentions med school and the bills. At this point, when I first watched the episode, I did wonder if this was going down the Inheritance Road, but still never guessed exactly what might be coming. He asks how she was planning to pay her debt back -- "Did you think that Denny would pay for everything?" She's dumbfounded, and for the first time since the prom looks like she's having an emotion other than grief -- she looks angry. She asks what he's talking about, and he claims he's protecting his son. She's shaking as she demands to know where he was, then, when Denny was sick. "Because I was there. The whole time. I was there. I was working 80-hour weeks and I was still always there! He had so many surgeries. So many procedures. He was so scared. Where were you then? You may not get me, but you don't have to. Because I don't get you either. I don't get how a father abandons" (at this, she's out of her chair, with her bag, to leave) "his dying son." He finally tells her to wait and asks if that's what Denny told her. "He didn't tell you the truth."
In the morgue, Cristina watches closely as Burke's hand shakes and he has problems. She stutters, shocked that the tremor is still happening but he talks over her, basically narrating what he can't do and what he needs for this procedure. When she yells that she thought he was fine, he yells back that he's not, and that she just wanted to believe he was fine. "My hands, are the only things that I have that are of any value to me. To you." She argues that's not true but he goes on that she wants Preston Burke. It's a little bit different than when he made the speech about how he was more than a surgeon, but it looks like his perspective has been shaken by the bullet he took. I think that HE wants Preston Burke even more than she does. "They stare, and he holds his hands up, under the light in the otherwise black room. "My hands, these, are who I am. If I can't do this, if I can't finish this surgery... " And his hands fly away. She finally stares at the corpse, not able to look at him, and he stares at her, nearly crying. With that, she springs into action and figures out how she can help him with the surgery so that he can finish. Without looking at him, she quietly tells him, "Nobody has to know." Come one, come all, see the surgeons at Seattle Grace! Some have tremors, some steal hearts! Really makes you comfortable with the profession. But he nods. I guess they'll both do whatever they can to get Preston Burke back.