The actress, who plays Cheryl Brady in the Channel 4 soap, revealed that Emmett Scanlan's character is about to get nastier than some of TV's most famous baddies.
Speaking to Inside Soap, she said: "Brendan is the nastiest bad boy I've ever seen - I'm talking worse than EastEnders' Dirty Den.
"If you think he's been mean so far, you haven't seen anything yet! The thing is that he does care for Cheryl and has good intentions towards her. But events won't turn out the way he planned."