Alistair's world comes crashing down around him.

Dr Mickey Webb, a new doctor, is pranked by Charlie Fairhead and Jay Faldren using the ED starter pack.

Dr Sam Nicholls' past in Afghanistan.

Jeff and Dixie's relationship.

It's Christmas Eve and the nurses from Holby ED head out to party. Fletch dreads all the stress that the big day brings, so he busies himself sorting out everybody else's problems.

Three of the four new student nurses interview each other about their new job at the ED.

Paramedic Jeff arrives at the scene of a school coach crash.

The exclusive episode begins with Iain agreeing to visit a fellow former soldier, who he served with in Afghanistan. Persuading Sam to accompany him to the hospital where Kenny is being treated, they are surprised to discover it’s not a veterans’ hospital, but a rehabilitation centre for soldiers suffering from Post-Traumatic Stress Disorder. Inside the centre, Kenny welcomes Sam and assumes she and Iain are now together. He reminds her of all the letters Iain used to write to her, much to Sam’s confusion as she never received any. As Iain struggles to confront his own past the bond between him and Sam deepens. And when Sam has to make a call to Tom, will she tell the truth about where she is and who she is with?

On the night before their wedding, Zoe and Max head out to celebrate their final night of freedom… but will Greta’s unexpected appearance reawaken Zoe’s doubts? Meanwhile, Max and Lofty’s night takes a surprising turn when they end up back in the ED… but will Max’s mishap prevent him from getting to the registry office on time?

Cal gets more than he bargained for when Taylor presents him with a surprise. How will he react? Will Taylor stick around to find out?

Relive the stunts, explosions, emotional storylines and Hollywood guest stars as Derek Thompson and Cathy Shipton (Charlie and Duffy) celebrate their 30 years in Casualty.

Crossover with Holby Ciy; for part 1, see Casualty@Holby City (1) Catastrophe hits Holby A&E when a truck carrying petrol crashes into the hospital. Even though only at the hospital to collect his things after been struck off, Jim is thrown into the center of the accident when he has to help Holby City character Rosie save a baby's life while Bex's life is put in danger when she takes a man to the drugs section of the hospital to help him find a doctor but it takes a sinister turn when he takes her hostage to help him get drugs for himself. Elsewhere Harry and Luke try to help out in the hospital another explosion happens leaving Bex, Jim and others lives in danger.

It's Christmas in the ED, and the team face an emergency blood shortage. Whilst Stevie fights to save a family man’s life, Iain takes a big risk to secure the hospital’s supply.

Jodie's actions causes a disastrous ripple effect, Stevie faces hostility when she puts her personal issues with Siobhan aside, and trainee Indie and Jan collide.