What stands out most for any parents watching though is the sequence in which Des exposits at his Eastenders-mute child...
DESMOND: Beyond where you can see, there's--there's an island, and it's a very special island. (Chuckles) I left it a long time ago. I never thought I'd see it again.
(Penny ascends from below deck.)
DESMOND: It's called Great Britain. And the most beautiful part of the island is Scotland, and that's where your daddy's from. There's mountains and glens and monsters in deep lochs, and... and it's where your mummy and daddy... fell in love.
PENNY: It's also where he broke her heart.
VIEWING PARENTS: Alright, Alright! Not in front of the kid, Penny!
DESMOND: Yeah, well, I... I thought I'd leave that wee bit out of it.
PENNY: You also left out the bit about his grandfather--the man who sent a boat to the Island to kill all Daddy's friends.
VIEWING PARENTS: Did he? Did he really? Can't think why! Thank God you're here, Penny. No child should ever get to the age of four without being given the full details of their parents' unstable relationship and bloodthirsty relatives.
DESMOND: We'll be in and out. He'll never know we're here, Penny.
PENNY: Don't underestimate him, Desmond. If he finds out we're here, I don't know what he'll do.
VIEWING PARENTS: You'd better be the one doing the settle tonight, that's all I'm saying.