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