When Mo uncovers a secret, Mr T and Inga's Swedish-Style wedding takes a dark turn, While Serena, Elinor and Jason are involved in a car accident.

It's crunch time for Mo, who has some difficult life choices to make, and a patient who is dear to Ric forces him to try to mend broken ties. Meanwhile Jasmine has growing suspicious of Fran's intensions with Jac.

Matteo's arrival irritates Jac and when the medic discovers his past misdemeanours, she throws down the gauntlet. Elsewhere, Dominic gets emotionally embroiled in a challenging case.

Dom stoops to low levels to land an assistant's position after Isaac gets a research grant. Elsewhere, Inga fights for her fiancé attention, and Bernie returns

Sacha becomes suspicious about Essie and Raf's relationship, and Fletch fights to save his friend Artem's life when the old gambler returns to the Acute Assessment Unit (AAU)

Serena faces her demons and comes to a heart-wrenching conclusion, Zosia takes action when Issac reveals his true colours, and Mo risks her professional reputation.

Jac's job and livelihood are at risk when a mystery patient arrives on Darwin and seeks help, while Keller welcomes a new face to the team. Elsewhere, Oliver has his mind preoccupied with a surprise from Zosia.

As a personal emergency strikes, Mo Makes a heart-wrenching decision, and when Nina oversteps the mark with a patient on AAU, her judgement is called into question.

Jac and Matteo's relationship seem to be heading in the right direction, but when she becomes suspicious of his motives, her investigation unearth skeletons in his closet.

Matteo and Jac clash over the patient, Sacha Tries to keep a secret from Essie, and Ric cracks the whip on the Acute Assessment Unit Floor, But a surprise visitor throws him off his game

As Jasmine begins to investigate the past, She makes a shocking discovery, while a misunderstanding leaves a vulnerable Dom at odds with his new friend Lofty.

Jac and Fran get the shock of their lives when someone from their past turns up at the hospital while Raf realises that he likes Essie more than he's letting on.

Oliver must compete for both funding and Jac's support when Matteo pitches a tempting rival project, and Dominic tries to keep his relationship with Isaac a secret from his parents.

Jac buries herself in work, determined to save he life of a scared patient, while Sacha is forced to confront his faith when his mother sets him up on a blind date. Plus, Donna returns

Donna is dealt a cruel blow by her ex, but assistance is on hand from a surprising source. Elsewhere Dominic wants to uncover the truth about Lofty's life, but he is not ready for what unfolds.

Jac puts her patient before her own health concerns, with serious consequences. Elsewhere Raf is taken aback when Parker is brought into hospital and is concerned about the boy's welfare.

Jac may finally acknowledge her feelings for Matteo, and Bernie sees through Serena's attempts to keep everything normal. Meanwhile, Raf is determined to remain professional when Kim reached out for help.

Essie worries that she is not being a good foster parent to Parker, and a tricky patient diagnosis throws Morven straight in at the deep end on her first day back.

Part one of two. Guy's plans for his much anticipated Neurosurgical Unit are put in jeopardy when he makes a shocking discovery about Tristan Wood - the Unit's main benefactor. Meanwhile, Serena considers re-kindling her romance with a smitten Robbie but, with Bernie in her thoughts, can she commit to happy ever after with him? And Ric is pressurised to undermine everything he's worked for by Tristan.

Raf enthusiastically makes plans for the future with Kim and the twins he is to be a father of. However, his hopes and dreams looks set to be dashed by a series of revelations.

A grieving Morven will not accept the circumstances of a close tragedy, while a familiar face arrives on Keller for emergency surgery, putting Sacha in a compromising position.

Zosia's behaviour continues to spiral out of control leading Jac to become concerned for her. Morven faces her fears when she takes charge of a charming patient.

A familiar face makes a return under shocking circumstances, and grief-stricken Serena takes an eager Jasmine under her wing, but both get more than they bargained for.

Isaac lashes out when Dom questions their relationship, Serena is dealt a further blow after Elinor's death, and a drunken mistake prompts Ollie to take a big step in his relationship with Zosia.

Dominic and Isaac's toxic relationship finally reaches boiling point, Fletch's world is shattered by a life-changing revelation, while Matteo tries to reunite Jac and Jasmine.