In Monday night’s cliffhanger episode, it was finally revealed that EastEnders newcomer Kyle is a secret member of the Slater family.
After spotting Stacey Branning on Albert Square, Kyle - played by trans actor Riley Carter Millington - made his way over to her and shockingly dropped a massive bombshell.
"Stacey Slater? I'm Kyle. I'm your brother!"
While the revelation was very badly timed for Stacey, it has become clear over the recent weeks that she is in need of help.
But will Kyle, who soon becomes concerned by Stacey’s increasingly unstable behaviour, be able to help?
Unbeknownst to her loved ones, Stacey (Lacey Turner) is battling a rare mental illness known as postpartum psychosis, which affects new mums and can cause hallucinations.
Convinced that newborn Arthur is in danger, Stacey will be seen becoming increasingly more paranoid as she fears for her baby’s safety.
And, in dramatic scenes next week, Stacey will be seen clutching Arthur as she stands on the rooftop of the Queen Vic.
Tamwar (Himesh Patel) and Nancy (Maddy Hill) soon spot Stacey, and rush to warn Martin (James Bye).
Clambering up to join her on the rooftop, a desperate Martin tries to convince Stacey to come down from the rooftop, telling her that he will do anything to protect her and his son.
However he is left shocked when Stacey tells him that he is not Arthur’s father - God is.
Martin eventually realises that the only way to save Stacey and Arthur is to pretend that he believes her, and so he convinces her to hand the baby over to him.
But his relief is short-lived when Stacey, still frighteningly close to the rooftop’s edge, suddenly loses her footing… and slips.
As loyal fans will remember, this is the very same rooftop from which Stacey's beloved husband, Bradley Branning, fell to his death from.
Could history be about to repeat itself?
EastEnders airs these scenes on Monday, January 11 and Tuesday, January 12 on BBC One.