There's turmoil ahead for Katy on Fair City when she receives a troubling letter from Ciaran, take a sneak peek at the drama here.

Coming up in Tuesday's episode, Eoghan hands over a letter that has arrived in the front door for her.

"No stamp?", she asks.

"Someone must have popped it through the letterbox, that's why I thought it might be important", Eoghan responds.

Katy's face falls as she reads the letter.

"What is it love?" Eoghan asks in concern.

"Ciaran", Katy says, her voice shaking in fear.

Fans can find out what happens next on Tuesday on RTÉ One at 8:00pm.

Fair City airs on RTÉ One on Sundays and Tuesdays to Thursdays.

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Catch up on Fair City on the RTÉ Player.