Fair City's Paul is in for a shock when Carol accidentally spills the beans and puts a spanner in the works for his revenge plans on Fiona.
Coming up in Wednesday's episode, Carol approaches Ruth and tells her: "You must be very excited are you? It's alright, Fiona told me about the engagement."
Later, when Ruth dresses up in a fancy costume, he tells her: "I thought you were way too old to be dressing up as a princess."
"I'm not a princess", she responds. "I'm a flower girl, for your wedding."
Meanwhile, Carol has to confront her past as Hayley continues to search for her birth father.
They meet Seamus, who had possible connections with Hayley's dad.
"You say you owe me?", Carol tells him. "Answer a few questions for her will you."
"You don't look like a cop," he replies, eyeing Hayley suspiciously.
"I'm not," she shoots back.
Fans can find out what happens next on Wednesday on RTÉ One at 8:30pm.