Sean Slater will become embroiled in a vicious fight with Jack Branning upon his return to Albert Square.
Jack is furious on EastEnders after discovering that Sean was behind Amy's disappearance.
Tensions quickly flare up between the two as their old rivalry becomes apparent once again.
But Jack soon realises that Sean has no idea that former lover Roxy has died.
Sean previously believed that he was Amy's father, but a DNA test on Christmas Day in 2008 revealed otherwise and Sean was left utterly heartbroken.
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He later fled Walford after kidnapping Amy, but upon his return over 10 years later tries to take her once again.
Little does he know, however, that Roxy died in 2017 after drowning with her sister on Ronnie's wedding day.
Next week, Jack takes Sean to Roxy's grave to break the news and explains what happens.
But Jack can't hold back on the anger he has for Roxy and blames her for everything.
Sean is furious after hearing Jack badmouth Roxy and the pair come to blows.
The pair eventually manage to calm down and Sean admits that he has returned to make amends.
Later, Jack tells a shocked Stacey that her brother is back...
*EastEnders airs Mondays and Fridays at 8pm and Tuesdays and Thursdays at 7.30pm on BBC One
