Three Species on Lava World
by Jim Cline
Sequel to "Going Past the Town Prison," Geodon and Nansella learn to live in exile, but assisted by the strange but helpful Rardats they had found hibernating in their millennia-old airship. Then they find that the Rardat's mortal enemy has followed them here, and all were in danger. How to alert the authorities that had set bounty hunters after them, of the great danger even to Earth herself?