Denise Fox discovers Sheree Trueman's shocking secret this Christmas - but could the EastEnders favourite find herself in danger because of it?
Viewers know that Denise doesn't trust her dad Patrick's new wife Sheree - and possibly with good reason...
It's been clear from the start that Sheree isn't all she seems, with some even believing her capable of murdering Ted.
This festive season, Denise will have her doubts confirmed when she learns some incriminating new information.
Sadly, this means that poor Patrick will be left feeling very lonely once the secret has been exposed.
On Monday (December 23), Sheree babysits Amy, but Amy picks up on her shifty behaviour when she takes a call from someone called Isaac.
When Amy reveals what happened to Denise, she's immediately intrigued.
Armed with the new information, Denise is determined to catch Sheree out.
On Christmas Day, Patrick has a surprise dinner guest and Sheree arrives just in time to join them, leaving Denise suspicious.
Later, Sheree catches Denise looking through her phone... Having been caught out, Denise confronts Sheree about the mysterious Isaac.
When Denise demands Sheree leaves, the confrontation will have devastating consequences for Patrick on what should have been a happy, family day.
But what does Sheree have to hide?
When Patrick learns the truth, he blames Denise for interfering in his love life - can she salvage her relationship with her dad?
Denise is going to have a rocky Christmas in more ways than one, as her boyfriend Jack finds himself in danger.
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