Not done yet?

Chris and Livvy and Louie have been on my mind for a long time now, and while I am comfortable with where I left their relationships at the end of The Dog on the Moon, the final book of the Longevity Law Enforcement Trilogy, I am not sure I can let them go.  I find myself wondering about their earlier lives and how their precariously balanced society made them into the people they are.  That's almost always true about how we see other people, I think.  History matters, even in the future, I guess.  So there may be a few more stories coming, although probably prequels, which would mean Chris on his own and Livvy on her own.