EastEnders airs worrying scenes next week, as Callum Highway is being watched by a mystery character.
Callum is busy preparing for his police assessment, hoping to make it into the force.
As he rushes around trying to get everything sorted, brother Stuart is left trying to reassure him that it will all work out.
Callum's doubts lead to Stuart having a word with his boyfriend Ben Mitchell, encouraging him to speak with him.
With Ben and Callum's romance, Ballum, going from strength to strength, Ben does his best to encourage his boyfriend not to worry.
As the pair talk about things, Callum is too busy thinking about the assessment to realise someone has been watching him.
He could be in danger too, as the mystery person makes their move.
When Ben leaves the flat, the buzzer on the door goes with Callum expecting him to be back already.
But when the door opens, it isn't Ben waiting for him.
Callum is in no way prepared for who arrives - but who is it and what do they want from him?
The soap spoilers for the rest of the week remain coy over who makes an appearance.
In fact, Ben and Callum are not mentioned for the rest of the spoilers.
It comes amid reports Keanu will return and kidnap Callum to get back at Ben later this month.
There's also reports Keanu will take on Ben in a deadly showdown, as revenge for his recent "murder".
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Ben had Martin Fowler kill Keanu at Christmas, after his affair with Phil Mitchell's wife Sharon was exposed.
But Martin didn't kill him and helped him fake his death and flee, with him now tipped to return.