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.