Martin Fowler threatens Karen Taylor in tonight's EastEnders to make sure she stays silent.
Karen was a convinced Keanu had been killed after he vanished on Christmas Day when his affair with Sharon Mitchell was finally exposed.
The concerned mother even attacked Phil Mitchell in the pub before breaking down in tears while trying to find answers about her boy.
However, Karen was relieved when Martin confessed that Keanu was very much still alive at the end of Thursday night's episode.
In Friday's show, Martin confronts Karen and reminds her to keep her mouth shut about Keanu's fate.
The Mitchells are still convinced that Keanu is dead after Martin and Linda Carter faked his demise.
But Karen isn't happy with the information she has and is determined to get the answers to more questions.
Karen starts to speak to some of her neighbours, but Martin stops her in her tracks.
Will Martin stop Karen from blabbing to Phil and Ben?
Martin decided he couldn't hide the truth from Karen any longer after she broke down in the Queen Vic.
She accused Phil of killing Keanu and started swinging punches and smashing glasses.
Martin dragged her out kicking and screaming - then calmed her down back at home.
After a heart to heart with Bex, Martin realised that he had to do the right thing.
He realised that Karen could keep a secret after discovering she hid Keanu and Sharon's affair for months.
When Karen promised she was trustworthy, Martin told her: "He's alive. Keanu's alive."
*EastEnders airs on BBC One on Mondays and Fridays at 8.00pm and Tuesdays and Thursdays at 7.30pm
