Guest Stars Zoe Tapper as Katy Sutcliffe Danny Webb as DS Rory Maxwell Richie Campbell as Liam Sutcliffe Katherine Kelly as DI Karen Renton Sam Spruell as Oliver Graham Dawn Steele as Catherine McAulay Alex Jordan as Joshua Dermot Crowley as Henry Neilson Carolin Stoltz as Dr. Engers Agni Scott as Dr. Hamood Shauna MacDonald as Mary Earlham Lucy Menzies as Carla Josh Zaré as Dylan