Happiness is... when a writer who is already in the middle of producing a book for you e-mails to say "I've had a great idea, are you interested?" and you get to tell her "Yes!" right away... The fruits of this exchange may be quite a long way down the track but we're absolutely certain they'll turn out to have been well worth waiting for! (No pressure, then, author!)
Other than this, and some slave-labour on admin, we have little to show for the week except that we have finalised covers for three forthcoming books and turned the final draft of one over to the proof-reader. There was no overall best-seller this week, and our average response time was six hours and 53 minutes.