Pierrot's Song by Rachel Nightingale

The travelling players of Litonya have destroyed many lives by manipulating the mystical realm of Tarya, and Mina has discovered her brother is one of their victims. Although she is determined to stop them, her hopes for help from the Council of Muses have been dashed. The only possibility for healing lies in a journey to the heart of Litonya, and into a past long lost to history.

When ancient stories give up their forgotten secrets, a path forward begins to appear. But love and talent are pushed to their limits as Mina and her companions come face to face with an enemy who has finally stepped out of the shadows.