Gwen's fixation on Sash and Nina's past continues in Thursday's Fair City on RTÉ One and the RTÉ Player.
On Tuesday, fans discovered that Sash did time for a crime that Nina committed.
In Thursday's episode, Gwen bluffs Nina into revealing some of the truth about her and Sash's history.
The trailer for Thursday's episode sees Nina tell Gwen: "It was years ago - and I never asked Sash to do that for me."
"You still let her, though," Gwen replies.
"It was her choice," says Nina. "She forgets that."
Fans can find out what happens next on Thursday 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.
