Secret Diary of a Call Girl, starring Billie Piper (Doctor Who), is the sexually explicit story of a beautiful woman who leads the ultimate double life. To her parents Hannah is a legal secretary, which often involves late night work. To her clients, Belle is whatever they want her to be. However, her moto of never getting emotionally involved with her clients is soon put to the test. Follow Hannah/Belle's adventures and mishaps in this eight-part mini series.