Just dropping in very quickly to thank you all for your kind words! I'm glad that people have enjoyed my little story... and I'm sorry for those I depressed.
Paul: no this wasn't for a challenge. I didn't even realise there was one out there that this would fit.
I won't say never to a sequel. In fact, LabRat has unwittingly given me a title I'm finding hard to ignore. However, I certainly wasn't planning on writing one.
As far as I'm concerned, Clark will turn up as in the episode and Perry will realise that he was right all along.
Chris