EastEnders is set to welcome back two major characters in

upcoming scenes, and they bring plenty of drama in their wake.

The first returnee is none other than Bianca Jackson (Patsy Palmer),

who gives Sonia Fowler (Natalie Cassidy) quite the shock when she

arrives in Albert Square unannounced.

As she is introduced to Reiss Colwell (Jonny Freeman), things turn sour when she learns that Zack Hudson (James Farrar) has gone AWOL, and she heads to Whitney Dean’s (Shona McGarty) flat in a bid to get some answers.

When Zack comes home, he tries to evade Bianca’s questions, but it soon becomes too much and he heads out again.

Later, after a candid conversation with Linda Carter (Kellie Bright), Bianca finally manages to talk to Zack…

During her visit, Bianca also turns her attention to Bernie Taylor (Clair Norris), who is still reeling from the murder of brother Keanu.

When Bernie refuses to go back inside the cafe, Bianca sees an opportunity to help her and bag herself a job. The pair soon settle down for a heart to heart, where Bianca tries to encourage her back to work.

Elsewhere, things grow tense among the Mitchells when Billy (Perry Fenwick) presents Honey (Emma Barton) with her new engagement ring, but is interrupted by the arrival of his dad Stevie (Alan Ford).

The Mitchells are stunned by his sudden appearance, and Phil (Steve McFadden) makes it clear that he isn’t welcome.

Stevie is quick to turn on the charm, and though Phil can see right through his phoney act, Honey encourages Billy to talk to his dad.