Medical drama Casualty was off air last week due to sport, but our weekly trips to Holby ED will resume this Saturday, as episode 4 of the show’s latest boxset Supply and Demand is broadcasted.

Characters in the spotlight this time are Iain Dean (Michael Stevenson), Rash Masum (Neet Mohan), Jacob Masters (Charles Venn) and Ngozi Okoye (Adesuwa Oni).

Iain’s venture into the world of Hart continues, Ngozi battles her addiction, Rash takes a brave step and Jacob makes a discovery when his son arrives in the ED.

The drama isn’t stopping, so here’s everything you need to know about what’s ahead in the episode.

The drugs story continues

Iain and Teddy’s (Milo Clarke) first day on Hart requires moving a patient called Rhys from a grounded airplane into an EpiShuttle.

There’s been an outbreak of contagious Marburg, so Rhys needs moving from the plane and into an ambulance. It’s a race against time though, as the team hit traffic and Rhys starts to panic.

He claims that he has discomfort in his stomach and in his worried state, he tells Iain and Teddy that he doesn’t want to die alone. Iain, still trying to ignore the phone call he received in the last episode, cannot help but be reminded of his mum in this moment.

Rhys then suffers a seizure and goes into VT. Teddy and Iain know they are at risk of exposure if they treat him, but they don’t have any choice. During this moment, Teddy grows convinced that Rhys does not have Marburg.

As the cover of the EpiShuttle is lifted, it becomes apparent that Rhys is choking on a balloon of drugs. Tim, Iain and Teddy’s boss, then radio’s in and confirms Rhys definitely has Marburg. Feeling worried, Teddy reveals to Tim that PPE protocol has also been breached.

Meanwhile, at the ED, Rhys’ wife Pippa is cornered by the police and she reveals her partner was forced into smuggling drugs.

Later, with Teddy decontaminated and Iain next, Dylan Keogh (William Beck) and the team are getting the other balloons of drugs out of Rhys. Suddenly, one splits, and Iain – who has been exposed – jumps in to start compressions. Faith Cadogan (Kirsty Mitchell) then takes blood from Iain in full PPE. She tells him that she’s glad he’s quite reckless, otherwise he wouldn’t have taken a risk with her.

Aw, romance.

Teddy suffers

The stress of his day triggers an episode of AVNRT for Teddy. It’s a complication of his heart condition and it causes his chest to feel tight. In the back of the ambulance, Teddy is faced with Tim.

Teddy isn’t keen on facing the fallout of the breach, given how he’s feeling, but it makes Tim wonder if he’s really got what it takes to be on Hart.

In haste, and wanting to get rid of Tim, Teddy quits Hart. Just as Tim leaves, Teddy clutches his chest again but this time, things are much worse.

Jacob’s son returns

Jacob’s son Blake rushes into the ED with little Carter in tow, but focus appears to be more on Blake, who is very agitated.

Rash queries whether he’s had any changes in medication recently, leaving Jacob to admit that some drugs were recently purchased online.

Jacob and Rash head to see Sunny (Jamie Marie Leary) in the pharmacy for answers, but she reveals that Blake’s drugs won’t be in stock for another 6 months. She says that unless Jacob pays for a private prescription, Blake won’t get what he needs.

Jacob’s left deep in thought – what will he do next?

Ngozi commits

As Dylan continues to support Ngozi in her addiction battle, he offers to be her sponsor. Abel and mum Dee then arrive. Abel has a tension pneumothorax but instead of supporting him, Dee insists that he needs to be more resilient.

As Abel wakes up, Ngozi learns that he was given conversion therapy in an attempt to please Dee. The difficult dynamic between mother and son leaves Ngozi feeling triggered so she moves away, unable to control her emotions.

Desperate for a drink, Ngozi later faces Dee again, which leaves her very close to giving into temptation.

After the shift, Ngozi heads to another meeting and she finally opens up. Eventually, with the encouragement of the room and Dylan as well, Ngozi feels ready to commit to sobriety.