Hard drugs, gang members and the threat of terrorism all combine to prove that modern-day policing isn't just about robberies and ASBOs. Despite his professional heroics, DI John Keenan has to face facts about his marriage, while probationer Lucy Slater has a baptism of fire at Holby South.
                                    David Sterne
Desk Sergeant Edward 'Mac' McFadden
                                    Sara Powell
Rachel Barker (Crown Prosecution Service)
                                    Elaine Glover
Rookie Lucy Slater
                                    Kieran O'Brien
Constable Robert Clifton
                                    Jimmy Akingbola
Constable Neil Parker
                                    Kacey Ainsworth
Inspector Jenny Black
                                    James Hillier
Custody Sergeant Christian Young
                                    Zöe Lucker
Kate Keenan
                                    Richard Harrington
Luke French
                                    Cal MacAninch
Detective Inspector John Keenan
                                    Tim Pigott-Smith