Some uncomfortable truths emerge when Inspector Black's husband is brought into the station. Robert and Lucy are on the hunt for a vigilante attacking doggers.

In his dealings with a local tramp, PC Clifton discovers his compassionate side. Following the failed raid on Stenga, John starts to self-combust.

A grieving Luke and an angry John are at loggerheads over a case involving John's dad. Christian's relationship with Miranda progresses, and Lucy and Jake take on a case with dire consequences.

John and Kate try to sort out their marriage as Luke is given some devastating news.

John is taken off the Burrows case and decides to pay his father a visit in prison. Lucy makes a big decision.

Following an investigation into a violent bouncer, John gets the shock of his life. Kate and Rachel's feud escalates. Lucy looks for a missing baby and regrets making a rash promise.

The station struggles to cope with their loss, and an attack on a youth starts a chain of events which remind John of his uncomfortable past.

The station is thrown into panic as a sniper shoots at Holby South Police cars. John's dad brings Kate and John's relationship to boiling point and Kelly finds out about Roger.

With the decision on the CID job imminent, Neil and Kelly's relationship is put to the test. John and Luke investigate a possible race attack on a local solicitor.

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.

John and Luke investigate Jac Naylor, a registrar from Holby City Hospital who is suspected of killing a patient; Luke becomes a father; and Kate and John meet the new DCI.

John and Luke work against the clock to discover the source of a deadly batch of drugs. Robert realizes he wants to be a part of his son's life