Lisa says her half-sister, Sarah, is a sociopathic liar who is pushing her entire family away with her web of deceit, which includes forging checks and lying about the deaths of her father and brother. Sarah admits she has a problem, which has cost h... (more)er every relationship she has ever had, but she says she still doesn’t know how to stop. Sarah’s family confronts her on Dr. Phil’s stage. How does she explain her choices? Could something in her past have triggered her behavior? Plus, how can she repair the damage she has caused and regain her family’s trust?