^ Nope, that's not it. I wrote Demons of Air and Darkness immediately after finishing my Farscape novel House of Cards, so I had 'Scape on the brain. But the reference is subtle...
Just like you seemed to have had Firefly
on the brain while writing the 3rd Gorkon
book, after writing the Serenity
adaptation (Mal Rennols, Gorram Grasslands).