It looks like this may well turn out to be book number three - now where did that come from - it was never in the plan.
Books have a habit of creeping up on you and refusing to go away until they are written. I'm afraid I have one of those on my hands.
There is another curious thing. In Out of Sight Out of Mind, I invented an organisation, called The Organisation, to be the villains of the piece. Now it seems as if they may be the villains of this book too. Now how did that happen?