Rash returns to the ED and is immediately thrown into dealing with an attack at a market in Holby, while Ethan attends the scene. And David’s son Ollie arrives at the ED out of the blue.

Rash helps a patient through a terrible loss, Ethan is brought a case by a friend from the past, and Duffy struggles with being left home alone while Charlie is at work.

An accident brings David and Ollie closer together, and Duffy learns how overlooked some care home residents can be.

Archie takes justice into her own hands to support a wronged patient, a friend from Iain’s past helps him think about his future, and Rash struggles to cope as pressure mounts.

Rash’s career is threatened when he is blamed for Mason’s mistake. Iain’s confidence is knocked by Jan and Ruby’s surprised reaction when they hear he’ll be going for the HEMS job. Effie gets onto the CF trial thanks to Ethan’s lies.

David and Ollie continue to butt heads, Rash decides to fight to stay in Holby, and a new member joins the paramedic team.

Mason struggles to ask for help in his most difficult week as a junior doctor, David’s bubble is burst when Rosalene starts to fight for custody, and Ethan struggles to convince Effie to go through with the trial.

Ethan struggles to keep his personal life from distracting him at work, while Duffy fights to reclaim her confidence despite some devastating news.

Rash and Mason finally make peace, and Archie is reunited with guilt when the abusive ex-teacher she had taken vengeance on returns to the ED.

Tension rises between Ethan and Rash, while Rosa opens up to David about her past.

Ethan regrets his actions when Effie's trial goes wrong, Jade faces a dilemma, and Danny’s impromptu visit to his childhood home isn't quite the family reunion he hoped for.

During a routine CQC investigation, Robyn is devastated to realise she can’t rely on Duffy. Ethan stifles his feelings and turns his back on Effie, and Rash protects Mason from Dylan.

Ruby tells Jan that she no longer wants to work with Lev after she learns about his shady past. Rosa and David put their fake relationship into action, and the terror attack continues to haunt Ethan.

Rash can’t stand it when Mason saves the day, Charlie is shocked to learn that Duffy can’t look after herself, and Rosa realises her mum has lied to David.

As Duffy's dementia continues to worsen, Charlie struggles with affording long-term care for her and helping her grow accustomed to the presence of her new carer Sian.

Ruby is delighted when she receives a visit from her sister Violette and discovers that she is pregnant, but Ruby offends Violette when she suggests that her sister only wants money from her.

It's an emotional rollercoaster of a day for Rash as events take their toll on staff and patients alike. Dylan struggles in his role as clinical lead, and Archie is desperate to impress Dylan but instead accepts friendship from Will.

A rehabilitated Connie Beauchamp returns to the emergency department in the wake of Mason's death to find Dylan consumed with guilt.

Jacob attempts to make a difference in two patients' lives, while Ruby helps Archie get to the bottom of an ED mystery.

A desperate Charlie seeks help from an old foe, whilst Faith and Lev find themselves living through their worst nightmare.

Marty suffers a betrayal, a guilt-ridden Charlie questions his decision to put Duffy in a care home, and Archie and Connie bond over their work.

An anxious Charlie searches for Duffy, who is missing in hostile weather conditions. Meanwhile, Lev is unable to accept the severity of Luka's prognosis.

The ED pulls together in Charlie’s time of need, and Connie struggles to conceal her guilt from Archie.

Ruby and Violette's relationship is pushed to the limit and Harmony's life is put in danger. Will struggles to finish a tedious report for Connie and turns to Lara for help, but he soon learns he should not mix his personal life with his work. Elsewhere, tensions run high when Ethan and Rash are forced to work together.

Violette tries to get clean in rehab and prepares to fight Ruby for custody of baby Harmony. Faith struggles to cope with Luka’s diagnosis and considers joining a support group.

Faith and Lev prepare for Luka’s surgery. Charlie returns to work earlier than expected, throwing himself into work as a distraction from his grief, but soon becomes agitated when he realises a few things in the ED have changed in his absence.

Ruby fails to juggle Harmony and work, and Marty pushes Jade to the limit.

New paramedic Fenisha makes a big impact, and Jacob is forced to go behind Charlie’s back.

A heartbroken Lev struggles with Luka’s chemotherapy, and grieving Charlie finally snaps.

Marty finally acknowledges how dangerous his behaviour has been outside of work and decides to change his ways. Meanwhile, Ethan questions what he really wants when Fenisha turns him down, and David suggests that Dylan's behaviour indicates feelings towards Faith, but Dylan denies it.