Phillip Kennedy Johnson & Simon Spurrier 
Jim Henson’s The Power of the Dark Crystal Vol. 3 [PDF ebook] 

After the arduous journey across the strange lands of Thra, Thurma has returned to her homeworld of Mithra. Just as when she began her journey, Thurma is alone, having betrayed her only ally. But Kensho has not given up hope that their worlds might both be saved. If Thra and Mithra are to coexist, these unlikely heroes will have to reconcile their differences and uncover the secret that connects their two worlds. Collects issues #9-12.