EastEnders fans are set to see Alfie Moon (Shane Richie) issue a stark warning to Kat (Jessie Wallace) in an upcoming episode of the soap.
Warning: spoiler alert!
The Daily Star reports that Alfie is terrified when Kat's cousin Stacey (Lacey Turner) turns up at their home in Albert Square and thinks she will put his family in danger.
Stacey's reappearance comes after Kat sees her by chance in the street and later meets Stacey's partner Luke (Matt Willis).
A source told the paper: "Stacey turns up because she is livid that Kat has put her new life in danger by going to meet Luke."
The source continued: "She is taking a massive risk returning to the Square but she wants to make sure that Kat doesn't come back.
"Kat is so pleased to see her and the pair catch up like old times - making Alfie furious.
"He can't believe what he's hearing and asks to speak to his wife alone. He then lets rip and insists Stacey leaves and never comes back."
The source added: "He's terrified they will be in trouble for harbouring a criminal and that police will think he and Kat have known of her whereabouts since she did a runner.
"But Kat has had no contact with her and is so happy they are reunited.
"It's going to be a difficult few weeks for Kat and Alfie as Stacey is going to drive a huge wedge between them."
The scenes will air on BBC One and RTÉ One on Tuesday February 18.