Ian (Adam Woodyatt) receives a terrible shock in the coming days as Ben (Joshua Pascoe) finally reaches breaking point, confiding in him about what really happened on the night of Heather's tragic demise.
As seen in our pictures below, Ian later goes to the allotments as he struggles to comprehend Ben's confession.
Desperate for Ian to know it was an accident, Ben follows him and begs him to understand - but will he? And what will Ian do now that he knows the truth?
EastEnders airs these scenes on Tuesday, May 15 at 7.30pm on BBC One.
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Photo gallery - Ian struggles to comprehend Ben's confession: