Guest Stars Paul Blackthorne as Guy Morton Marvin Humes as Robbie Waring Sheridan Smith as Miranda Locke Tilly Blackwood as Emma Waring Kenneth Anderson as Martin Bradford David Schofield as DI Harry Chambers Helen Sheals as Rosemary Locke Geoffrey Church as Derek Bascombe Simon Greenall as John Locke Diane Langton as Nina Cocozza Robert Morgan as Mark Davies Arturo Venegas as Sergio Cocozza Aimie Bracken as Shirley Davies Tom Magditch as Marco Cocozza Luke Matthews as Franco Cocozza