This week on EastEnders, Whitney and Zack visit Bianca - and a local girl in trouble changes everything for the couple.

Elsewhere, Lauren gets some surprise attention, Denzel considers using steroids and George continues to hide his heritage revelation from the girls.

Read on for pictures and spoilers from this week's new episodes!

Monday, March 4 (Episode 6867)

Writer: Simon Ashdown
Director: Abe Juckes

Over the course of five weeks, we follow Whitney and Zack as they visit Bianca in Milton Keynes. Upon arrival they bump into local kids Britney and Taylor.

Whitney tells Bianca about her pregnancy but asks her to keep it from Sonia.

A few weeks later, Britney and her brother have a meal at Bianca's and Whitney gets close to Britney.

Whitney gets concerned for Britney when she finds her rifling through the bins - and later, Bianca reveals that Britney's mother Keeley is struggling with drug addiction.

In the present day, as Zack and Bianca attempt to convince Whitney to return to Walford, Sonia suddenly shows up. Amid Whitney's concern for Britney she decides to visit her but when a speeding car approaches, Whitney pushes Britney out of the way and gets hit in the process....

This episode airs Monday, March 4 at 7.30pm on BBC One and from 6am on iPlayer

Tuesday, March 5 (Episode 6868)

Writer: Simon Ashdown
Director: Abe Juckes

Whitney is rushed into hospital - but after an ultrasound, Zack, Sonia and Bianca are relieved to hear that the baby is fine.

Whitney and Zack learn that Keeley has been arrested for drug dealing and Britney has gone missing.

Later, having tracked down Britney, Zack and Whit have an argument about what to do next - and he prepares to return to Walford without her...

This episode airs Tuesday, March 5 at 7.30pm on BBC One and from 6am on iPlayer

Wednesday, March 6 (Episode 6869)

Writer: Amy Guyler
Director: Abe Juckes

Denzel enlists Nugget's help in filming a workout video but Nugget then decides to upload it without Denzel's permission. Later, after receiving a string of negative comments on his video, Denzel gets tempted by the idea of anabolic steroids...

Zack's downbeat as he updates Lauren and Penny on Milton Keynes - and Sonia's unimpressed that he left Whitney behind. Later on, Zack drowns his sorrows and makes a move to kiss Lauren...

Trying to cheer her dad up, Gina books a family trip to Jamaica on her credit card but is left confused when he turns down the idea out of hand.

This episode airs Wednesday, March 6 at 7.30pm on BBC One and from 6am on iPlayer

Thursday, March 7 (Episode 6870)

Writer: Amy Guyler
Director: Abe Juckes

Needing money to buy his steroids, Denzel lies to Yolande and tells her that he needs cash for a school trip.

Cindy tries to get George to tell the kids what he learned about his heritage, while Gina urges her dad to reconsider the trip to Jamaica as she's already spent five grand on flights.

This episode airs Thursday, March 7 at 7.30pm on BBC One and from 6am on iPlayer