While still a child, Liz Barton accidentally killed her mother in an attempt to protect her from her estranged stepfather. After the accident, she was adopted by another family and her name was changed to Celia. Years later she returns to live in her childhood home with her new husband and young son, neither of who know her true identity. When the real estate agent who sold the house to her family is brutally murdered, Celia fights to protect her innocence with the help an ambitious prosecutor who takes another look at the earlier case.