Guest Stars Daisy Head as Amy Stevenson Kieran O'Brien as Andy 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 Steven Brand as Eddie Garcia Lucy Russell as Melissa Mitchell Ian Hanmore as John Kempt William Hope as Scott Mitchell Chris Brailsford as Dr Shaw