JJ stuns Zak and Carol in Friday's Fair City when he reveals that he knows who robbed the bookie's.
"Just let me help you find whoever did this," offers Zak.
"I already know who did this," smiles JJ.
"That didn't take long," says Carol.
"I'm meeting him for lunch in The Station," JJ replies.
Watch what happens next on Friday on RTÉ One and the RTÉ Player at 7:30pm.
Fair City airs on RTÉ One and the RTÉ Player on Sundays, Tuesdays, Thursdays, and Fridays.
