WE all know that the Doctor won't die, but HE doesn't know that. I took the synopsis to mean we are going to get an introspective look at how the Doctor faces what he thinks is the end of his life. I'm looking forward to a great character study episode: I know some disagree, but I think Moff does these just as well as RTD. True, Amy had no character development in series 5, but I feel that that was the limitations of the actress. The script had potential for the growth to be shown in the acting but that wasn't leveraged. Karen's acting has gotten massively better this year and Amy has grown as a result.