Guest Stars Christopher Cowlin as Police Officer Owen McDonnell as Ryan Kelvin Clare Calbraith as Lizzie Kennedy Haydn Gwynne as Helen Ferguson Liam Garrigan as Dr. Christy Nash Daisy Ridley as Hannah Kennedy Ashley Walters as DI Carter Gary Pillai as Stephen Miskin Jamie Parker as Ben Morgan Daisy Waterstone as Katie Bowman Kirsty Besterman as Amy Nash Peter Vollebregt as Mark Janssen Teresa Churcher as Gemma Bowman Julie Hoult as Carol Philip Brook as Vicar