When her twin sister is murdered under mysterious circumstances, Lora Gerritsen (Juliet Reeves) feels as if she's lost part of herself. But through her grief, she senses her dearly departed sibling is trying to tell her something about the person who killed her. Bringing the guilty party to justice, however, will require Lora to assume her dead sister's identity and risk her own life to lure the killer out into the open.