From BS01

Only Takadox paused to look back at the cavern where Carapar had died, wondering for a moment just what it would take to end the life of a being older than the stars.

Don't know why I never noticed this yet, now I am all but certain that Takadox is the Murderer. When we find out, I wouldn't be surprised. And he's GregF's favorite Barraki

-Star