EastEnders fans think they have worked out why Sheree is keeping Isaac a secret from husband Patrick Trueman...
But while lots of people were talking on social media about the fact Keanu Taylor is still alive thanks to the quick-thinking of Linda Carter, and the fact that Sonia Fowler was the one who tried to steal thousands of pounds from pensioner Dot on Christmas Day, most people were trying to work out why Sheree is keeping Isaac a secret.
The revelation tonight that Sheree's mystery man Isaac - the reason she left husband Patrick on Christmas Day - is actually her son didn't leave many people shocked. But what did surprise viewers is the fact she is willing to leave Patrick rather than come clean and reveal that she has a son.
But EastEnders fans think the reason Sheree is keeping Isaac hidden from Patrick is because he is Patrick's son, too...
Fans of EastEnders will already know that Sheree and Patrick go a long way back, having met years before they got married last year. So the theory that Patrick is Isaac's father would work out.
Could Sheree have married Patrick knowing that they have got a son together? But if so, why hasn't she told him yet?
Or is there another explanation for Sheree wanting to keep her husband and son apart for the time being?
As Sheree reluctantly left Patrick in tonight's flash back episode to Christmas Day, it was clear she didn't want to be leaving her husband but had little choice after Denise's confrontation.
As she came face-to-face with Isaac, Sheree was clearly happy to see her son and the pair are obviously close, and with Issac now sticking around in Walford, it looks like his arrival won't stay secret for long...
Actor Stevie Basaula has joined the cast of EastEnders as Isaac, and he couldn't be happier: "I feel very blessed to be part of such an iconic show.
"Like many of us around the country EastEnders is something I have grown up with, so it excites me to bring to life this part of Isaac."
EastEnders Executive Producer Jon Sen hinted there is plenty of drama to come now Isaac is in Walford: "We're thrilled to welcome Stevie to EastEnders. We've teased the character of Isaac - the 'other man' in Sheree's life - ever since her arrival six months ago.
"Today Issac has arrived on the Square with bravado, charisma and his fair share of charm.
"A teacher with a troubled past, his story will unfold over the coming weeks as we discover just why Sheree has kept him away from Patrick these last few months."
EastEnders airs Monday and Friday at 8pm and Tuesday and Thursday at 7.30pm on BBC One.
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Claire is Assistant Managing Editor at What To Watch and has been a journalist for over 15 years, writing about everything from soaps and TV to beauty, entertainment, and even the Royal Family. After starting her career at a soap magazine, she ended up staying for 13 years, and over that time she’s pulled pints in the Rovers Return, sung karaoke in the Emmerdale village hall, taken a stroll around Albert Square, and visited Summer Bay Surf Club in sunny Australia.
After learning some tricks of the trade at websites Digital Spy, Entertainment Daily, and Woman & Home, Claire landed a role at What’s On TV and whattowatch.com writing about all things TV and film, with a particular love for Aussie soaps, Strictly Come Dancing and Bake Off.
She’s interviewed everyone from June Brown — AKA Dot Cotton — to Michelle Keegan, swapped cooking tips with baking legend Mary Berry backstage at the NTAs, and danced the night away with soap stars at countless awards bashes. There’s not a lot she doesn’t know about soaps and TV and can be very handy when a soapy question comes up in a pub quiz!
As well as all things soap-related, Claire also loves running, spa breaks, days out with her kids, and getting lost in a good book.