4 O'Clock Club

Everyone's full of festive spirit at Elmsmere - apart from Ding Dong, who cancels Christmas. But he's forced to reconsider his decision when he gets some very surprising visitors.

Polly's first day of term doesn't go to plan when she's asked to look after troublesome new boy Evan. Meanwhile, Bell's return as head teacher is doomed to failure from the start.

Everyone is curious about Fleur's new boyfriend – but his secret identity is more surprising than any rumour. Meanwhile CJ and Nunn go to war over a pair of second-hand underpants.

Darnesh discovers his locker is haunted by a hungry ghost with a sweet tooth. Meanwhile Eli and Fleur learn to tango, but the dance of love could spell the end of their friendship.

Can Amber eat the delicious snacks served at book group - but avoid reading the book? And when Owen needs a case-study for psychology he thinks badboy Evan is the perfect subject.

Danny wants to ask PC Rowe on a date - but will nerves mean he'll never find romance? Meanwhile, Amber's plans to win a lifetime's supply of chocolate get awfully messy.

Danny gets PC Rowe a birthday cake – but his icing skills leave much to be desired. Meanwhile the death of the school hamster brings up some unsettling memories for Mr Nunn.

Eli visits his poorly nan and discovers that hospitals can be much more fun for patients than visitors. Meanwhile, Darnesh's prank with a locker backfires when he gets stuck in it.

This special 100th episode follows Nero's exploits seeking fame and fortune in Hollywood. With no money, the world's worst agent and only 24 hours to go, can he make the big time?

Bell is booked at a magic conference – but the real trick is how to sneak out without Mrs Morgan knowing. Meanwhile Nunn finds himself in a running battle with Isaac's pet goat.

Polly's perfect day with Evan suddenly goes horribly wrong. Meanwhile, Eli thinks Owen has a secret girlfriend… but gets a shock when he learns who Owen is really hanging out with.

Darnesh has to eat a jar of picked eggs before the sell-by date expires. And Eli sees the girl of his dreams but makes the mistake of involving Fleur and Eleesha in his lovelife.

Polly has helped Evan with his family - but can he ever forgive her for revealing his secret? Meanwhile, Owen and Chester compete to see who will win the Pupil of the Year trophy.