EASTENDERS' Callum Highway is going to be left shocked next week when he receives a bombshell mystery caller.
The former soldier - who is played by actor Tony Clay in the BBC soap - will wave goodbye to his boyfriend Ben next week in the morning before being horrified at the door.
Callum will spend the week rushing around and trying to prepare for his police assessment unaware he is being closely watched.
Both Karen Taylor and his brother Stuart try to reassure him that everything is going to be OK - but that seems unlikely.
Whoever is watching Callum waits until Ben has left the house to make their move.
The BBC soap has teased that Callum "won't be prepared" for who arrives, so could it be Keanu Taylor?
Callum is one of the few people in the Square who believe Keanu to be dead - and he knows boyfriend Ben and his dad Phil are ultimately responsible.
Viewers know Keanu is in fact alive after Martin Fowler failed to kill him and faked his death with a slightly sozzled Linda Carter.
Filming pictures have revealed that Keanu will make an explosive comeback for the special 35th anniversary week of episodes.
There has been speculation that he could kidnap Callum in an attempt to draw Ben out so he can take his own revenge.
With Phil out of the country on the run from the murder charges, Ben is the only Mitchell Keanu will be able to take revenge against.
But with his child due that week, could someone else be returning for Callum and Keanu just be back for the birth of his child?