Beyond the Gyre [Song of the Arkafina #4]

The island of Asaruthe has sheltered the Dawnmaid, Myriadne, for the past sixteen years, but Yr has fallen prey to a deadly plague, and it is clear she must leave soon. Katkin travels with Myriadne to help her free the Firaithi from Maggrai''s diabolical laboratory.
Meanwhile, Gunnar Strong Arm''s twin sons, Jakob and Lut, are feuding with each other. When Jakob carelessly gap shifts, he leaves a trail that Maggrai''s minions can follow back to Asaruthe. The death and havoc they wreak will send Lut on a mission of vengeance against Maggrai and his brother.
In the final battle, the Dawnmaid must find a way to converse with her enemies, the Angellus, before they attack the secret haven of the Firaithi with their unquenchable fire. What is it they have been defending through all the turns of the Gyre? The answer astonishes both Amaranthine and human alike...
Beyond the Gyre is the final book in the Song of the Arkafina" series."