Fair City star Ryan Andrews has told RTÉ Entertainment that fans "haven't seen anything yet" as the hunt for Karen's killer continues.
Tuesday night's episode on RTÉ One saw Andrews' character, Seán, officially told that he is no longer a suspect in Karen's murder. But Andrews filmed those scenes five weeks ago, and he told RTÉ Entertainment that viewers should hold on to their seats for what is to come.

"They haven't seen anything yet," he said. "That's such a cliché, I know, but genuinely, the scripts that are coming up have so many twists and turns.
"It's fantastic as an audience member, but also as a cast member. The buzz on-set is brilliant - it's gripping us as well."
The Dublin actor said that the whodunit has seen everyone on set "go all Sherlock Holmes".
"Even myself," he laughed. "I actually thought it was me at one point! Seán got the all-clear but I got the all-clear from Fair City as well - I won't be missing for 23 years!"
"I do have one person [in mind], but it is constantly changing," Andrews continued.

"I'm looking at Robbie and thinking it could be Robbie. I'm looking at Aoife, Carol, Oisín - the names are being bounced around left, right and centre! It still could come around as me, but hopefully it's not!
"They all have something to play for and it's also as if they all have something to hide, which is even better..."
Fair City continues on RTÉ One on Wednesday at 8:00pm.
Take a sneak peek at Wednesday night's episode:
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For more on this week's must-see soap moments, click here.
Catch up on Fair City over on the RTÉ Player.