I don't know. I agree he's not a nice guy but it isn't his fault his patient committed suicide! That's what remorse is, "an emotion experienced by one who feels they have committed an action contrary to their moral code." He didn't do anything wrong and that is the point he's making. His moral code may not be very deep. . . I'll grant you that. I don't think in an investigation he could have talked about his sadness (if he had any) it would not have been appropriate there. All he's saying is that he isn't a murderer, not that he isn't unhappy that the patient did what he did.