As first reported earlier this year, Heather (Cheryl Fergison) will soon meet a tragic end as Ben (Joshua Pascoe) turns violent at her flat, believing that she's responsible for DCI Marsden discovering that he lied about Phil and Stella.
Heather's final scene sees Ben lash out at her in a moment of fear and desperation, picking up a picture frame and hitting her hard over the side of the head with it.
As Ben and Jay (Jamie Borthwick) watch on in horror, the mum-of-one then falls backwards, hits her head on her kitchen worktop and is left lying dead on the floor.
When Phil stumbles upon the disturbing scene after being released from prison, he decides that he has to protect his twisted son and goes all-out to conceal the crime.
Thinking quickly, Phil fakes a burglary at Heather's home and takes away all evidence which links to Ben and Jay. He's also forced to leave Heather's young son George lying asleep in his bed at the flat.
Phil then comes up with a cover story for Ben and Jay, ordering them to claim that they've been busy working on a car at The Arches all night. Additionally, he arranges for the boys to burn their clothes, while the all-important picture frame - which contains a happy photo of Heather and Shirley - is dumped in the canal.
However, it seems that Ben is already scheming as he deliberately conceals Jay's hoodie, not wanting it to be destroyed with the other items of clothing…
When Shirley (Linda Henry) later finds Heather's dead body at the flat, a police investigation is launched - and Ben and Jay are among those who need to be quizzed to eliminate them from the enquiry.
While Ben seems eerily calm, a tormented Jay is traumatised by the entire situation. As the pair are led away for separate questioning, can they really maintain their lies?
To make matters worse for Phil, the police are also starting to suspect that the burglary at Heather's flat was faked. Is his cover-up already in jeopardy?
EastEnders airs Heather's dramatic exit and its fallout all next week on BBC One.
For full episode information and pictures for next week's episodes, head over to our EastEnders spoiler section.
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> EastEnders spoiler picture - Shirley devastated by Heather's death
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