Wicked Rebellion

Trapped on Darkwater Island and locked in the fae world, Tria and her friends must find a way to defeat Bixby and escape, because Bixby's determined to destroy the dragons they retrieved and lock she and her friends in another series of trials.

Wicked Rebellion is the third book and conclusion of the Darkwater Series. The books are best if read in order. Look for Wicked Betrayal & Wicked Challenge.