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.

As the ED goes into lockdown, Cam tries to free himself of the past, whilst Jacob takes matters into his own hands and Dylan makes peace with his feelings.

Siobhan's personal and work woes intertwine, reaching boiling point, whilst Nicole's motherhood looms and Cam's fresh start pushes him further into the past.

Iain goes to extreme lengths to protect his family, whilst Dylan's indecision backfires, and Siobhan's hopes get raised, then crushed.

As Jamie's life hangs in the balance, Cam seeks closure, whilst Nicole and Ngozi share a surprising moment. Jodie admits the truth, but at what cost?

Tariq's future hangs in the balance, Stevie's guilt grows as Siobhan falls to pieces, and Jacob is determined to break the cycle for his son.

A desperate Jacob faces another dead end in his search for Blake. Siobhan has a shocking revelation, and Tariq's rogue behaviour causes problems.

Whilst Dylan is faced with a painful decision, Cam drives himself to isolation, making Siobhan take matters into her own hands.

Stevie plays a dangerous game with her mystery man, whilst Iain reaches boiling point and crosses a line, and Nicole makes the ultimate sacrifice.

Jacob fights in his search for Blake. A conflicted Cam unearths repressed emotions, and Dylan struggles with devastating news.

In the storm's aftermath, Cam is haunted by his past, which finds him at his most vulnerable, whilst Jacob's worry over his son reignites and Nicole is faced with an unimaginable dilemma.

Iain dives into the deep end, during a storm that wrecks Holby, leaving Stevie and Siobhan struggling to stay afloat, whilst Dylan wrestles with the prospect of catching feelings.

As a storm threatens Holby, a tragedy forces Cam to make a tough decision, whilst Stevie makes an unexpected connection and Tariq is determined to help a vulnerable Rash.