Guest Stars Jack Greenlees as Sam Barclay Christina Cole as Izzy Chiswell Samuel Oatley as DI George Layborn Sophie Winkleman as Kinvara Chiswell Nick Blood as Jimmy Knight Natasha O'Keeffe as Charlotte Campbell Adam Long as Raff Chiswell Ann Akin as DS Vanessa Ekwensi Joseph Quinn as Billy Knight Sophie Colquhoun as Sarah Shadlock Robert Pugh as Geraint Winn Mandana Jones as Dr. Kamila Muhammad Silas Carson as Henry Drummond Lucy Briers as DCI Judy McMurran Florence Bell as Tegan Barlow Ken Christiansen as Maître D' at Franco's Stuart Wilde as Waiter at Franco's Alex Rendell as Police Interviewer