The students go on a mystery bus tour, where Conor's confronted by an unexpected guest who threatens to expose his secret. Elsewhere, Danny's mum's alcoholism takes a sinister turn and he's forced to make a heartbreaking decision.

At the Halloween party, Leech cracks under peer pressure from McCann and the lads. Meanwhile, Conor freaks out when Sandie confides she knows his secret. With her sister's anniversary mass looming, Eva bonds with Danny over her troubled personal life.