Joe Murtagh Creator, Executive Producer, Writer Ruth Wilson Lorna Actor, Executive Producer Daryl McCormack Colman Actor Simon Delaney Massey Actor Philippa Dunne Niamh Actor Mark Huberman Michael Actor Hilda Fay Amy Actor Frances Tomelty Sister Eileen Guest Star Dermot Crowley Coyle Guest Star Simon Maxwell Executive Producer Sam Lavender Executive Producer Harry Wootliff Executive Producer, Director Margaret Perry Writer Susan Breen Producer Rachna Suri Director Courttia Newland Writer Miriam Battye Writer Jamie Hannigan Writer