Medical examiner Faith McIntyre is called in on the case of an unconscious woman clinging to life after a hit and run. The woman is FBI agent Macy Crow is Faith's mirror image-- the twin sister she never knew she had. Faith knew that she was adopted, but now she and Texas Ranger Mitchell Hayden are following a trail of clues Macy left behind. They make a shocking discovery on an isolated country ranch: a burial ground for three women who disappeared thirty years before. Will Faith be able to save her sister and herself from the past?