Coronation Street viewers have spotted clues Michael Bailey is not really baby Tiana's father after Grace Vickers dropped a horror bombshell on him.
Michael proposed to Grace but she was horrified and declined, before telling him she had plans to move to Spain, taking his beloved daughter with her and away from him.
She also revealed she was dating someone else, and that he was coming with them to form a new family.
Getting down on one knee with a ring, Michael said: “Grace, I love you, please will you do me the honour of being my wife?
"I know I should’ve done this when you were pregnant, but I want to make it up to you now.”
But Grace responded furiously: “Why are you doing this now? You’re two years too late. I’m sorry, I can’t marry you.”
She added: "I didn’t want to have to tell you this but I’ve met someone and he’s the reason we’re moving to Spain.
“A fresh start for the three of us. Goodbye Michael.”
Heartbroken, Michael took Tiana and sat with her on a park bench so as to make her and Grace miss their flight.
But Grace was frantic as she had no idea where her daughter was, and called the police on Michael, who was later arrested and taken away in a police car.
Viewers have suspicions that Michael is not Tiana's biological father, with many commenting on how strangely Grace had been behaving and predicting her new boyfriend was Tiana's real dad.
One tweeted: "Michael, I don't think you're Tiana's daddy... #Corrie".
Another added: "it's been obvious how Michael feels about Grace & she should've told him she was seeing someone & now she's moving to Spain with Tiana?! after the way Grace reacted when Tiana called Michael dad & now this... is Michael really Tiana's dad? #Corrie".
A third penned: "I don’t think Michael is the dad of tiana, grace has been acting dodgy from the start #Corrie".
"I bet Tiana isn’t even Michael’s... there’s something dodgy about Grace #Corrie #CoronationStreet," added a fourth.
* Coronation Street airs Mondays, Wednesdays and Fridays at 7.30pm and 8.30pm on ITV
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