But Gilly is haunted by recollections of a much brighter life. She clings to fading memories of a time when she was contented and adored -- until tragedy swept all that happiness away and young Gilly's life was changed forever.

I have made my life an arrow, and His heart is my home. I have made my heart a blade, and His heart is my sheath....

Obsessed with avenging her loss and putting out the fire that still rages in her heart, Gilly has dedicated herself to destroying Macbeth, the boundlessly ambitious man who took away her childhood, and his goading wife. Disguising herself as a poor servant boy, she insinuates herself into their lives and, as she bears horrified witness to Macbeth's violent path to power, Gilly subtly begins to take a hand in the forces governing his fate. But as the culmination of her revenge draws near, Gilly finds her own life at risk when she confronts the troubling legacy of a long-concealed heritage.