Meanwhile, one of the designers was in touch this week to ask for a few more details about what's in the book.
I thought it would be mean of me not to share these little titbits with you, so here's what I told him:
Jimmy Coates: Blackout is about a power struggle and corruption in a general election. It takes place in the 24 hours before and the 24 hours after the election and it's all set in Britain - mainly in London.
There's a big set-piece action sequence at a place called Chisley Hall which is based on a real-life place called Chichely Hall, so maybe google that and take a look at images of it if you like. There's also a final climax action sequence at a club that I called in the book 'Loco' but in real life it's based on a venue called The Forum in Kentish Town, North London, so maybe google that one as well and take a look.
Apart from that there's also a big chase sequence at Heathrow airport that ends in a plane getting blown up. Obviously.
As for objects... the one that springs to mind is a hard-boiled egg coloured black as a signal to an assassin. Also, there are codes in su-doku puzzles.
Finally, here's a cheeky montage of little slivers from these alternative cover designs while they're still works-in-progress. See which bits you like...
OK, no more secrets from me today.