Guest Stars Kieran O'Brien as Andy Stevenson Daisy Head as Amy Stevenson Polly Walker as DI Baker Joel Morris as DS Houghton Bradley Johnson as Noah Stevenson Kathleen McDermott as Laura Terny Jonah Stevenson as Journalist Paul Dunphy as News reporter William Hope as Scott Mitchell Steven Brand as Eddie Garcia Lucy Russell as Melissa Mitchell Ian Hanmore as John Kempt Chris Brailsford as Dr Shaw