Sharon (Letitia Dean) has spent years lying to her young son Denny about what really happened to his late father, but Derek is about to put her in an awkward situation by revealing her deception.
Magazine reports have revealed that Denny is present when a tactless Derek (Jamie Foreman) talks loudly about Dennis's fatal stabbing in an upcoming episode.
Having previously been told that his dad died a hero, Denny is deeply confused by what he is hearing - leaving an emotional Sharon with a tough choice to make as she must decide whether to confirm what Derek has said.
Meanwhile, with Tanya and Jack both close to Sharon, how will the Brannings react to Derek's latest bad behaviour?
EastEnders airs these scenes on Tuesday, October 9 at 7.30pm on BBC One.