As Charlie celebrates his 30th anniversary, the department is thrown into chaos.

Elle attempts to rally the troops, and Alicia discovers an uncomfortable truth.

Jac comes down to the ED to perform an emergency operation.

Ethan and Alicia are thrown together in a rescue operation.

Duffy pushes Charlie into attending a 50-year school reunion, where he bumps into old crush Gloria, and former bully Allan, who just happens to be Gloria's husband - and does not seem to have changed his brutish ways. As Allan's playground antics get the better of Charlie, a scrap ensues, leaving the old ruffian with more than just a bruised ego. Meanwhile, a very public argument between David and his ex-wife Rosa prompts their troubled son to act out in a very dangerous way, and Alicia tries to take her mind off her drunken antics with Ethan by helping a frail - but wily - elderly patient with a cat-based dilemma

Ethan struggles to make Alicia's birthday a day to remember as Lily deals with a family feud too close to home

Robyn's plans are thwarted when her ailing sweetheart Glen's health takes a turn for the worse. Meanwhile, Dylan's clinical skills are put to the test

Elle calls Connie's ability to focus on the job into question following her recent brush with death, and Robyn's plans for the future take a sudden, unexpected turn.

Robyn faces a difficult decision, while Ethan passes up the chance of happiness for the sake of his brother.

Dylan is distraught when Dervla goes missing - although it soon turns out new F1 Sebastian (Rik Makarem) knows something about the dog's disappearance. After waking up with Alicia, Cal is forced to admit his true feelings for her, but she remains unsure about committing to a relationship.

A spark of attraction remains between Charlie and Duffy, but with the status of Duffy's struggling marriage still unconfirmed, neither seems brave enough to take the plunge and ask the other out. However, when Duffy's pregnant daughter-in-law turns up the ED, the star-crossed pair find themselves delivering a baby - and repeating history. Meanwhile, Dylan discovers his new student Sebastian is the son of one of Holby's established surgical consultants, and is feeling the pressure of living up to his father's lofty expectations

An undercover inspection pits the doctors against the nurses, as Connie struggles to come to terms with Grace's condition

After a disappointing review, Jacob, Charlie and Duffy decide to challenge the team, questioning if Noel, Louise and David have the heart, brains and courage to do their jobs. Meanwhile, Alicia writes Ethan a touching biography for his online dating profile. But does any other woman understand him like she does?

Ethan struggles to bury his feelings for Alicia, as she and Cal become increasingly intimate. In an effort to get over his unrequited crush, Ethan invites another girl to the Christmas party, but the gesture doesn't stop him fixating on Alicia once he arrives on the scene. Meanwhile, Charlie and Duffy take advantage of the festivities to announce their relationship, but things turn sour when Ryan, Duffy's husband, turns up

Holby plays host to its very own Christmas Carol when ruthless department store manager Larry is admitted to A&E after getting caught up in a Christmas Eve sales riot at his shop. Also injured in the chaos is Toby, the son of Larry's put-upon deputy Rob, who was forced to bring his child in to work due to his inability to pay for child care. As the miserly Larry lashes out at his staff for their inability to contain the disaster, young Toby manfully weathers the pain of his injuries to give his father's boss a piece of his mind. Meanwhile, Duffy's estranged husband Ryan is also caught up in the fracas, and when he too is admitted to the ED, he makes use of his hospitalisation to try to repair his fractured marriage - much to Charlie's dismay

Rumours spread about Sebastian's accusation against Dylan, While Ethan decides it is time to stand up to Cal.

Dylan becomes the source of gossip after Seb's allegations, while Alicia and Ethan are forced to face the consequences of their actions.

A scuffle at an illegal rave leads an over-enthusiastic sergeant causing serious head injuries to a 19-year-old man and later planting drugs in his belongings to corroborate his claim that he had been assaulted twice by his quarry. Jacob is dubious about the sergeant's story and takes a police constable to one side in an attempt to persuade her not be an accomplice to her superior's crooked ways. Elsewhere, Elle's career is on the line as Connie goes on the warpath, David struggles to connect with his son, and Cal suspects Alicia's infidelity

Belle, a supervisor from a young offenders institute, is brought into the ED after being struck over the head with a wok by one of her charges, and Iain is dismayed to discover the assailant in question is his estranged younger sister Gem. However, there is more to Belle and Gem's conflict than first meets the eye, as the youth worker demonstrates a damaging attitude toward the young people in her care. Meanwhile, Connie treats Jamieson, who injured himself while exercising, and is claiming to be much younger than he appears. The case takes a more dangerous turn when the truth about his age is revealed, along with the motives of his much-younger fiancee

Alicia is surprised to discover her long-estranged parents Howard and Jackie are planning to give their marriage another go. However, when old family friend Martin turns up at their surprise anniversary party, and seems to have a falling-out with Howard, it soon becomes clear there is a secret third wheel in their relationship. Meanwhile, Charlie balances his over-zealous wedding-planning with caring for a reluctant teenage football star, and Cal's trust in Alicia is tested when he discovers she has a secret phone hidden in her locker

The morning of Charlie's wedding arrives, and Cal and Ethan wake hung-over following a riotous the stag party. However, the pair have no memory of the previous night's events, Charlie is missing, and Cal seems to have acquired a mysterious suitcase, which is cuffed to his wrist. Retracing their steps takes them back to a B&B, a tattoo parlour and a strip club, leading to a deadly encounter with a criminal intent on reclaiming the suitcase. Meanwhile, Duffy worries that her groom has developed cold feet, Iain receives a visiting order from Gem, and Elle learns a second complaint has been made against her

The day of Elle's hearing arrives, and Connie makes sure Grace is present as a visual reminder of Elle's mistake. Giving her testament, Connie delivers an exaggerated version of her daughter's condition, and makes it clear she will stop at nothing in the pursuit of her vendetta. However, when Grace collapses in the bathroom, severely injuring herself on broken glass, it falls to Elle to save the girl's life. Meanwhile, back in the emergency department, Robyn has doubts about whether she is fit to be a mother, after discovering her colleagues are placing bets on how she will manage

Iain is unexpectedly reunited with his sister when he is called out to an emergency involving his mother, but his efforts to make amends for his past have unforeseen repercussions. The hospital is inundated with binge drinkers, including a hen party that has ended with the bride getting shot with a bow and arrow. Dylan struggles to cope, but the experience gives him an idea. Grace returns to work, but seems to have lost her ability to talk

Steph, the woman responsible for Grace's hospitalisation, is rushed into the ER after attempting suicide in prison. The staff face an upward struggle in finding out what pills she has taken, one which is made all the more difficult by the patient's refusal to speak - and the cold distain of both Connie and Jacob. However, when it becomes clear Connie visited Steph in prison not long before she tried to claim her own life, things become even more complicated. Meanwhile, Iain helps Gem to get a job in the hospital coffee shop, and when Grace's continued silence is ruled as being a psychological issue, Sam decides it may be time to take her home

David prepares to hand Ollie over to his aunt, who will be taking him back to Rosa in Spain. With their separation imminent, father and son spend one last day together - in the ER. Iain suspects Gem is up to her old tricks when she short-changes a customer at the coffee shop, and Dylan presents himself to the board to pitch an idea to raise awareness of alcohol abuse. However, when his presentation fails to hit the mark, Louise takes matters into her own hands, and drags the board members into the corridors of the ER to witness firsthand the pressure binge drinkers are placing on the hospital's resources