Bess Marvin is a fictional character from the popular book series known as Nancy Drew. She is one of Nancy's closest friends and often accompanies her on various adventures. Bess is characterized by her love for fashion and food, and she often provides a contrasting perspective to Nancy's more serious and determined nature. In the stories, Bess is depicted as loyal and supportive, always ready to help Nancy solve mysteries. Her character adds a light-hearted element to the series, showcasing the importance of friendship and teamwork in overcoming challenges. Bess's personality complements that of George Fayne, another of Nancy's friends, creating a dynamic trio.