Erica Redfern is a high-school senior from a prominent California family, and the world is hers. But when her parents plan a second honeymoon in Paris and send Erica to Washington, DC, to stay with a grandmother she barely knows, the naïve seventeen-year old gets lured into a world of drug-trafficking, mob hits, sexual assault, and homicide. Erica is shocked to find that Diamond looks and acts nothing like a typical grandmother and is the owner of a wildly popular radio station. Erica is motivated by her grandmother's accomplishments, but her life is derailed when she falls into a friendship with college sophomore Meagan Shanahan, the chauffeur's niece, who attempts to entrap Erica in a shady scheme only to become a victim herself. Before long Erica is dating Justin Black, a known drug dealer, and falling deep into a criminal world far away from her elite life on the West Coast. When her parents are suddenly killed, Erica tries valiantly to maintain a sense of normalcy and finish her final year of high school, all the while tangled up with the seamier side of life in the nation's capital. Diamond: A Girls' Best Friend is an intense tale of chance, luck, and survival with action, crime, and suspense.