Guest Stars Vincent Regan as Dominic Carter Daniel Ezra as Dan Johnson Derek Riddell as Paul Brightman Tamara Lawrance as Clem Johnson Shannon Hayes as Ella Johnson Alistair Petrie as Robert Greenlaw Mark Bonnar as John Halliday Leanne Best as Abigail Strickland Ṣọpẹ́ Dìrísù as Michael Antwi Sam Stockman as PC Rose Thomas Dominique as Big Ray Ian Peck as Peter Mackie Glyn Grimstead as Sgt. Douglas Trimble