A beautiful late autumn day, an innocent game of hide-and-seek . . . but when twelve-year-old Ronnie Swan emerges from her hiding-place, she finds the brutally murdered bodies of her two little sisters. Nearby, a complete stranger covered in blood, sits sobbing on the family picnic table.

The killer, Scott Early, is schizophrenic. And although her parents somehow find the strength to forgive him, Ronnie cannot. Over the years, calmly, systematically, she plans her revenge. But as she closes in on Early, Ronnie will discover the true meaning of sin and compassion - and her decision will change her and her family's lives for ever.