A returning patient wreaks havoc for Jac, and Sacha fears for his daughter while Jodie is on the loose.

The hospital is locked down with a gunman on the loose. Trapped in theatre, Cameron needs Nicky's help if he is not to be exposed as being way out of his depth.

Sacha gets the shock of his life when Jodie appears back on the scene. On her first day on Darwin, Jac's replacement, Sahira Shah, doesn't take kindly to Kian. And a bubbly new nurse, Kylie, arrives in acute admissions, but will she survive her first day?

Sacha and Hanssen battle to save Dom’s life in theatre, while Jodie is terrified that she might lose her baby. Sahira tries to steady the good ship Holby, up on Darwin.

Ange blocks Dom's discharge, Alex makes a shocking discovery when a patient arouses his suspicions, and Nicky's health issues return.

Hanssen is shaken when a figure from his past appears. Cameron is backed into a corner when Bobby arrives on the ward threatening to talk. Ange and Dom clash over his decision to sue the hospital.

Cameron holds Ange hostage as the truth of his crimes comes to light. Max needs to look out for Louis, but is she up to it? And Dom is back on the ward for the first time since he decided to sue the hospital.

Reyhan challenges Hanssen to tell Sahira the truth, Nicky vents her frustrations on a shady patient, and the team rally to support Ange after her ordeal with Cameron.

Sahira is adamant that her father is innocent, Louis discovers Vicky is trapped in a toxic relationship, and Lucky isn't sure if Kian is really clean.

Dominic pushes Sacha to make an illicit choice, Kian and Chloe make a shocking discovery in theatre, and are the McGerrys at breaking point?

Louis is trapped as Vicky’s blackmailing escalates, a desperate Dom tries to convince Ange to take his case on, and Kian leads Lucky on a merry dance as he tries to dodge a drugs test.

Hanssen worries that the upcoming court case will cause more harm than good. Sacha prepares to risk everything for Dom, but is Ange onto them? Fletch tries to get to grips with his new job.

The cause of Reyhan’s death comes into question, putting Hanssen and Sahira’s relationship at breaking point. Dominic’s new found optimism might be too much too soon. Kian continues to lie to Lucky, but is she about to work out what’s really going on?

Donna leads the Holby nursing staff in a protest, but will Hanssen be moved by the nurses’ cause or are things about to get much worse for them? Lucky realises that Kian lied to her about where Andrei was staying, and an accidental encounter between Josh and Hanssen threatens to spill both their secrets.

When a majax strikes Holby – will self-harming Hanssen be heroic enough to ask for help? Secret addict Kian must choose between a young patient and Andrei – can he keep both safe? Thrust into the limelight, Jeong must diagnose a mystery condition – but will Dom help or hinder?

How far is wannabe consultant Dom willing to go to ensure his path to power? Burying her head in the sand over her BRCA1 diagnosis, can anyone get through to Max? Reeling from Andrei’s sacrifice, is Kian willing to betray Fletch's trust to get what he wants?

It’s the day of Max’s operation, and Ange and Josh’s relationship deepens. Kian convinces Andrei to return to the hospital to have his surgery, but is it enough to keep Andrei from leaving again?

Kian faces losing Andrei, just when he thought he had got him back. Dom gets a shock when a patient chooses Sacha as her consultant instead of him. Are Ange and Josh about to lose their jobs over their secret relationship?

Sparks fly between Kian and Fletch after Evie and Andrei disappear, Sacha and Dom compete for the top job, and Josh tries to win back Ange.

Defeated Josh questions his place on AAU, and will Fletch unravel when Darwin faces a crisis?