Question: At the end of the last ever episode, when Claire is taking the family photo, Nate whispers in her ear 'You can't take a picture unless it's already gone.' What does he mean by that?
Question: Is there any indication as to how and why Lisa Kimmel died?
Chosen answer: It is strongly implied that Lisa was murdered by her brother-in-law Hoyt, with whom she had been having an affair. When Nate confronts Hoyt about Lisa's disappearance, Hoyt shoots himself dead before the question is finally resolved.
Question: Is there a website which explains how some of the main character's die at the end of the show? I know how Keith, David and Federico die, but what about Ruth, Brenda and Claire?
Answer: http://www.hbo.com/sixfeetunder/obituary/episode63.shtml.
Answer: Nate actually say "You can't take a picture of this, it's already gone." It's kinda hard to explain, but he's referring to the fact that the moment Claire wants to take a picture of is over already, and she can't take a photo of it, just a different, lesser moment.