Fletch fights to save his friend Artem's life when the old gambler returns to the AAU.
Elle's career is on the line as Connie goes on the warpath.
Oliver must compete for funding and Jac's support when Matteo pitches a rival project.
Dylan becomes the source of ED gossip after Seb's allegation.
When Mo uncovers a dark secret, Mr T and Inga's Swedish-style wedding goes Scandi noir.
Rumours spread about Seb and Dylan, while Ethan's loyalty is pushed to the limit.
Mo strives to suppress her feelings for Mr T but, with his wedding looming, can she lie?
The Nonnatus team go to South Africa to try to save a clinic which is in danger of closure
A terrifying blast from the past upsets Dom's plans for a perfect Christmas with Isaac.
Mrs Tembe implements Christmas Jumper Day at The Mill.
Karen and Adam visit his mum in hospital before her operation.
Scrooge grumbles about Christmas, but will visits from some spectres change his mind?
As final preparations for the performance take place, Rob worries about Adam.
The fallout from the final rehearsal continues.
Duffy is forced to choose between her own happiness and that of her family.
Essie's feelings towards Parker lead her to make a questionable decision in her work.
Jac puts her patient before her own health concerns, with serious consequences.
It is the day of the final play rehearsal, and Heston has some comments to make...
Lena and Emma bond over an evening drink.
There is another Christmas Carol rehearsal, but can Heston keep his ghosts under control?
Things do not quite go to plan during the first rehearsal of the play.
Karen refuses to take a foster child over Christmas, but will guilt get the better of her?
Matteo's arrival irritates. Dominic gets emotionally embroiled in a challenging case.
A passing comment gives Zara an idea and leaves Daniel speechless.
After a disappointing review, Jacob, Charlie and Duffy decide to challenge the team.
Isaac receives a research grant, and an assistant position is up for grabs.
Zara shifts her focus to Emma, and Valerie has her hospital appointment.
Zara finally gets the news she has been waiting for. Emma is struggling.
An undercover inspection pits the doctors against the nurses.
Jimmi ponders forgiveness. Emma's recent past catches up with her.
Mrs Tembe encounters a vegetarian chef who is consumed by a powerful craving for meat.
Ruhma comes to the aid of a pregnant woman who is clashing with her birth partner.
When the community centre is broken into, Rob has to untangle a complicated situation.
Morven's future is uncertain when she becomes involved with a patient.
Daniel can't believe it when pictures of his Halloween outfit emerge.
Daniel has a struggle to find a Halloween costume that Joe wants.