The third book in an original series of novels set in the world of Netflix's The Dark Crystal: Age of Resistance. Tides of the Dark Crystal is the third book in a series of original young adult novels set in the world of Jim Henson's The Dark Crystal. As the Skeksis turn on the Gelfling, Amri must learn what it means to be a leader before the Gelfling clans--and his friends--become fragmented beyond repair.