Guest Stars Simon O'Gorman as Billy Flanagan Colin O'Donoghue as Conor Elliot Isobel Mahon as Bernie McMahon Melanie Clark-Pullen as Ann Marie Emmet Bergin as Frederick Delaney Deirdre Donnelly as Carol O'Dwyer Barry Cassin as Spike Molloy Milo Sampson as Tommy Flanagan Ailish Symons as Nicola O'Dwyer Karl Argue as Courier Paul McGlinchey as Tony O'Brien Ony Uhiara as Ashia Derbhle Crotty as Evelyn O'Brien Arthur Riordan as Hugh Simons Peter Michael Smith as Lennie