Nancy Harmon is a fictional character from the Lifetime movie "A Killer Among Us." She is portrayed as a determined woman who becomes embroiled in a murder investigation that affects her life and the lives of those around her. The film explores themes of trust, betrayal, and the quest for justice. In the story, Nancy's character is central to unraveling the mystery behind the crimes. Her journey highlights the challenges faced by individuals when confronting danger and deception in their communities. The film emphasizes the importance of resilience and the pursuit of truth in the face of adversity.