The emotional blackmail playbook is brought out on Sunday's Fair City on RTÉ One and the RTÉ Player.

The drama involves Dearbhla, her business partner, Joan, and Joan's long-lost son, Gareth.

Dearbhla is now romantically involved with Gareth and was previously the partner of Joan's late son, Cian.

On Sunday night, Joan tries to use Dearbhla as a go-between to build bridges with Gareth.

"He likes you," says Joan. "You could persuade him to have a civil conversation with me."

"You go on about being honest - this is so underhand it's almost pathetic," says Dearbhla.

Fans can find out what happens next on Sunday on RTÉ One and the RTÉ Player at 8:30pm.

Fair City airs on RTÉ One and the RTÉ Player on Sundays, Tuesdays, Thursdays and Fridays.

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Catch up on Fair City on the RTÉ Player.