But what secret are Gloria and Eddie hiding?
The New Year is set to be a family affair for George Knight as he is unexpectedly reunited with his adoptive parents, Gloria and Eddie Knight.
Having not seen George for over a decade, the pair arrive in Walford in an attempt to rebuild bridges with their son but it soon becomes apparent that both are concealing a secret.
Speaking ahead of their arrival, Executive Producer Chris Clenshaw said "We’re absolutely delighted to welcome the legendary and immensely talented actors, Christopher and Elizabeth, to the EastEnders family as they bring to life the characters of Gloria and Eddie."
"Although currently set to join for a short stint, Gloria and Eddie are thrust into the heart of the drama as they try to reconnect with their son but it soon becomes apparent why George has kept his distance."
On taking on the role of Gloria Knight, Elizabeth Counsell said "I can honestly say it has been an absolute joy. The cast and all of the team behind the scenes at EastEnders are brilliant and have been so welcoming. Colin and I actually worked together before, and who would have thought that I’d be playing his mum almost thirty years later!"
To which Christopher Fairbank, on taking on the role of Eddie Knight, added "I can’t tell you how thrilled I am to join the cast of EastEnders. Everyone has been so welcoming, and it’s been fantastic to meet and work with the brilliant actors involved in the show."
EastEnders continues Mondays to Thursdays at 7.30pm on BBC One with first look episodes available from 6am on BBC iPlayer