The ED staff must deal with the aftermath of a shooting at a local college.

The ED comes under attack from all sides following the shooting.

Jordan rallies the team when they are divided by a controversial new policy.

Jordan has high hopes for his new unit, while Yuki and Adam struggle with their workload.

Lenny makes a shocking discovery, while Jordan rallies the team for the inspection.

Kirsty is determined to help Simone recover, but it is not as easy as expected.

The events inside the college during the shooting are finally revealed.

Charlie struggles to balance his work and personal responsibilities.

With the inspection due in two weeks' time, Jordan rallies the troops.

When it looks like the ED will fail an inspection, Jordan considers resigning to save it.

Ruth makes a discovery about her husband, sending her on an emotional downward spiral.

Will Ruth reinstate Charlie on her first day as clinical standards manager?

When the ED comes under scrutiny from a whip-cracking advisor, Jay starts a mutiny.

Ruth takes revenge on Zoe by revealing that she has the highest mortality rates in the ED.

When Karl Fontayne continues to make Joe's life a misery, Jeff comes to his aid.

Will the ominous secret surrounding Ruth's marriage to Edward spoil her festive mood?

Jordan decides to drive to an important meeting despite his ban - with fatal consequences.

A tense confrontation between Adam and Warren has brutal consequences for Kirsty.

Ruth is unable to cope when Jordan puts her in charge of the ED.

Ruth's manic behaviour is exacerbated by the arrival of a mentally ill patient.

After her last beating, Kirsty decides that enough is enough, and it is time to leave.

Ruth is devastated to find herself sectioned, and tries to escape from the psych ward.

Hanssen makes an appearance in the ED and goes head-to-head with Jordan.

Hanssen makes an appearance in the ED, and goes head-to-head with Jordan.

Kirsty finds it hard to cope in the wake of Warren's death. Nita goes off the rails.

Nita has run away, and Kirsty is worried. Will her daughter come home in one piece?

Jay is on tenterhooks as he awaits his test results, and a new doctor arrives at the ED.

It is the day of Jay's operation, but he gets on the wrong side of a drug trafficker.

Dylan is left with blood on his hands when Hannah Fleet returns to the ED.

Jay attacks a patient on his first shift back. Is love in the air between Mads and Lenny?

The competition between Jordan and Miriam escalates.

Nita scales a fire tower and forces Kirsty to tell her the truth about Warren.

Polly's life hangs in the balance in this special real-time episode.

Jordan is forced to deal with the aftermath of Polly's death.

Bureaucracy gone mad results in the ED being overrun with patients.

Tess, reeling from her loss, is faced with the prospect of losing another young patient.

Mads is brought face-to-face with the taxi driver who tried to force himself on her.

Linda struggles to be taken seriously on her first day as clinical nurse manager.

Adam goes to great lengths to prove his patients come first.

Linda and Tess butt heads, while Jeff is forced to face his guilt over Polly's death.

Adam's God complex continues when he has the life of a sex offender in his hands.

Adam decides to disregard a patient's advance directive to not be resuscitated.

The stress of Mads' attack weighs ever heavier on her. Will the truth finally out?

Adam purposely mismanages the treatment of a patient accused of assaulting a young girl.

A patient prompts Kirsty to make some life-changing decisions.

An explosion at an airport sends shock waves through the ED.