Guest Stars Benedict Wong as Pete Cheng Philip Glenister as DCI William Bell Amelia Bullmore as Helen Preger Rebekah Staton as Liz James McAvoy as Dan Foster Johann Myers as Sonny Stagg Michael Feast as Andrew Wilson Deborah Findlay as Greer Thornton Tom Burke as Syd James Laurenson as George Fergus Christopher Simpson as Adam Greene Maureen Hibbert as Olicia Stagg Sean Gilder as Sergeant 'Chewy' Cheweski Patrick Brennan as Neil Woods Aaron Neil as Paramedic Robert Goodale as Davis Michael Gould as Merrick Ian Hughes as Radiologist Colin Wakefield as Taylor