EastEnders spoilers follow from this week's episodes, which are available to watch now on BBC iPlayer but haven't yet aired on TV.
EastEnders has confirmed a return for Rainie Cross in this week's episodes.
Tanya Franks has reprised her role as Rainie, who was last seen on the Square in June, for Stuart Highway's exit story.
Rainie will reappear in Tuesday's episode (August 23), which is already available to watch on BBC iPlayer, after being alerted to Stuart's worrying behaviour.
Karen will frantically contact Rainie when Stuart snaps and locks everyone in the GP surgery, insisting that no one can leave until he's been seen by a doctor.
Panicked, Bernie does all she can to help Stuart as the situation escalates, apologising to him for not realising he was living with PND and for helping Rainie leave the Square.
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Still convinced he has been misdiagnosed, Stuart grows desperate and confiscates everyone's phones while he demands more tests.
As Stuart breaks down, he's shocked to hear a knock on the door from Rainie, who is outside.
Rainie is overcome with emotion as Stuart explains that his cancer is in remission, and in turn, she tells him that she still loves him.
Stuart thaws as he discusses his PND diagnosis with Rainie in private. But the moment is short-lived when a police officer arrives to take him in for questioning.
Wednesday's episode will explore the fallout of Stuart's actions, as he arrives home from the police station believing he can start afresh.
While Rainie refuses to consider a reunion unless he begins taking his prescription, she does promise Stuart they can have a future together if he does.
She is overcome with emotion when Stuart finally agrees, and they reunite.
By the end of the week, Stuart is feeling more optimistic about things, with Rainie now back by his side.
When Jay refuses to let him return to work, Stuart starts to reevaluate his life in Walford, and wonders if leaving would be the best way for him to move on.
Stuart then faces a further setback when he discovers that the drugs he gave Jada caused Amy to collapse.
After an altercation with Jack, Stuart and Rainie decide to embark on their new life together away from the Square.
Stuart then shares some parting words with Ben – urging him to give his relationship with Callum another go – before leaving with Rainie in a funeral car.
Ricky Champ has played Stuart since 2018. His exit was announced earlier in the year, alongside Daye Hudson (Peter), Barbara Smith (Dana) and Jada Lennox (Kelsey Calladine-Smith).
EastEnders airs on Mondays, Tuesdays, Wednesdays and Thursdays at 7.30pm on BBC One and streams on BBC iPlayer.
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