On a rainy afternoon Reverend Carmichael tells his grandchildren the story of the twins, tragic and heartbreaking, that he witnessed firsthand. Thirteen year old Willow discovers that she had a twin sister who has suddenly come back to haunt her and the entire parish, spreading anguish and fear. Will Willow perish under the mental pressure her twin is exerting or will the people involved in the tragedy right the wrong that has been done and save Willow and the village?