A useful day, albeit unsatisfying. Useful insofar as I drew up a spreadsheet of what happens when so as to get some idea of when to leak clues in; unsatisfactory because I then did little more than write scrappy outlines notes for each day. I also completely re-wrote a description of top baddie - having last night made him little better than a stereotype I realised this morning that he just would not do as a 'real' effective person.
And from another site I learnt of the existence of the Writer's diet, which checks the 'leaness' or otherwise of a piece of writing. Interesting and useful.