Emmerdale fans were left utterly gobsmacked tonight after Graham discovered that he might be Millie's father.
Tonight, Graham appeared to piece everything together after discovering Andrea's daughter's date of birth.
It all came about when Kim Tate (Claire King) warned son Jamie against riding horse Blaze, but he dismissed her concerns and ends up losing control.
Everything turned to chaos as the other horses were left spooked and Millie was rushed to hospital after being knocked down.
As they were waiting for the doctor, Kim comforted her son (Alexander Lincoln) and insisted that it wasn't his fault.
However, unbeknownst to the pair, Andrea's revelation about Millie's date of birth sent Graham's head spinning and he demanded to know whether he is her father.
Andrea (Anna Nightingale) was utterly horrified and fans couldn't believe it.
One tweeted: "OMG.. IS MILLY GRAHAM'S DAUGHTER!? #Emmerdale."
While another commented: "#emmerdale that kid is Graham’s isn’t she?"
A third remarked: "#Emmerdale Jamie isn't Millie's father."
"No no no Graham is Millie’s dad !! #emmerdale," another wrote.
Tomorrow, as Jamie and Kim fuss over Millie, desperately tries to hide her dread over Graham's question.
But Graham, played by Andrew Scarborough, won't give up and leaves her angry messages telling her not to ignore him.
Later, he confronts her at the hospital but Andrea panics and doesn't want to face the truth.
Andrea begs him to keep their one night stand a secret and insists that he isn't Millie's father.
Yet Graham isn't convinced and is sure that her anxiousness is proving otherwise.
Is Graham right? And will this rip Andrea and Jamie apart?
*Emmerdale airs weekdays at 7pm on ITV, with an additional episode at 8pm on Thursdays
