Newlywed Cass realises he could go to prison for bigamy on Thursday's Fair City on RTÉ One.

In a teaser trailer for the episode, Olwen isn't exactly lifting his spirits.

"You're making shivs [weapons]!" says Cass. "What happened to prison being a retreat?!"

"Well, it doesn't mean there won't be challenges," Olwen replies.

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

Fair City airs on RTÉ One on Sundays, Wednesdays and Thursdays.

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Catch up on Fair City on the RTÉ Player.