I remember Nicola isn't all that happy when she realises that Lawrie is playing her being ill! :-) Nobly going down with her ship.... Yes, this made me think about how well I tell twins apart, which isn't very. It's much easier to do when the twins are together, if you know them, as in side by side in front of you! Not together, well, I'd often have to ask and sometimes be wrong, because I don't see the twins I know very often.

I agree that the people who didn't twig didn't have much of a chance to work it out with L and N. I remember a story when I was in school, of identical twins who went to different schools, one in our school, which is how I knew. They switched for April Fools. All the students knew but the teachers didn't have a clue!