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.

When a case involving a local gangster gets personal, PC William Jackson faces a difficult choice. Kate has an interview at the station and John regrets his night of passion with Rachel.

Harry offers to provide evidence against Stenga who, discovering what is going on, decides to take action. An elderly woman calls at the station, claiming to hear voices that tell her about future crimes.