Helen West is a Crown Prosecutor who cares about the people in the criminal justice system and strives to ensure that justice is served. She has a particular interest in women's issues, which sometimes leads her to clash with her somewhat odd superior and his cleanliness phobia. Despite this, she recognizes that it is the role of the police to gather evidence, but she also feels it necessary to investigate matters on occasion herself. As an unmarried individual, Helen is also involved in a relationship with Chief Supt. Bailey, though neither seem to be able to decide what they want from their lives or whether their futures are destined to be together.