Al makes a bet with Ayesha that he can go two hours without human contact.
Nonnatus House welcomes a new recruit, and a young man captures Fred and Violet's hearts.
Iain tries to make amends for his past but gets more than he bargained for.
Valerie tricks Mrs Tembe into going pheromone dating.
Karen and Rob help foster child Adam to reconnect with his mum.
Al is all fired up for the pub quiz, but will he lead his team to victory?
Will Jac finally acknowledge her feelings for Matteo or will she revert to type?
Emma receives Valentine's flowers, but who sent them?
Sid is mortified when he discovers Bethany has a crush on him.
An expectant mother with money worries enters into a painful arrangement with her cousin.
Connie's crusade reaches its pinnacle at Elle's hearing.
Sid discovers there is more to the work experience girl than meets the eye.
Emma and Lena bond over a leisurely picnic.
The maternity home faces closure and Barbara cares for a Chinese first-time mother.
Charlie is missing following his stag do, and Duffy is convinced he has cold feet.
A familiar face makes a return under shocking circumstances.
A self-help book leaves a bad taste in everyone's mouth.
Sid suspects something is wrong with Mrs Tembe, but can he persuade her to accept help?
It is the library launch, and Mrs Tembe is determined to make it work.
A grief-stricken Serena returns to work looking for answers.
Karen has pulled out all the stops for Adam, but will he appreciate her efforts?
Karen is mystified when she hears strange noises coming from Jimmi's consulting room.
Jimmi has a new interest, and Karen is in turmoil - what should she do about Adam?
Zara returns and is shocked to find that Mrs Tembe has introduced a library at the Mill.
Rosie is ready to quit university, while Emma wants them to fight fire with fire.
An explosion at the docks brings heartache to the people of Poplar.
Cal's trust in Alicia is tested by a horrifying discovery.
Bren wakes up and, whilst Ayesha wants her to move in, Tyler is keen to talk to her alone.
Ruhma grows concerned for the wellbeing of a pregnant woman with learning difficulties.
After Max makes it through to the group stages of 'the League', Rosie plans her revenge.
Mo returns from maternity leave and drops a bombshell.
Karen makes it her mission to cheer Adam up and Mrs Tembe shows her manipulative side.
Ayesha prepares to move in with Tyler, but he is clearly keeping a big secret from her.
The team reunite but all is not well when a change of management shakes up Nonnatus House.
Iain is confronted by his secret past, and Connie continues her crusade against Elle.
Fletch fights to save his friend Artem's life when the old gambler returns to the AAU.