Paul Darrow quotes:

I think the intelligent thing about it is that you have to carefully listen to it all to grasp it, and because I'm not in every scene - colossal disappointment to everybody that it may be - I'm not getting the full picture here today while recording it.

He's psychologically damaged, I suppose, if you stand back and look objectively at him, but then, who isn't?

If he is a ghost, then it's very disappointing for me, because he is banished in the story, and that could mean that he won't be coming back, and that would be terrible, wouldn't it?