Emily
Evanna Lynch
Robert
Michael Smiley
Arden
George Webster
Robert
Michael Smiley*
Swimming Teacher
Martin McCann
Greasy Haired Teacher
Cathy Belton
Emily's mother
Deirdre Mullins
Arden's father
Declan Conlon
Arden
George Webster
Dr. Golding
Barry McGovern
Young Policeman
Dónall Ó Héalai
Granny
Stella McCusker
Young Emily
Sarah Minto
June
Ally Ni Chiarain
Arden's Mother
Ali White
Midwife
Laura Matassa
Square Head
John Travers
Bearded Teacher
Michael Hough
Young Policeman
Donall O'Healai
Nurse
Catherine Walsh
Newborn Emily
Millie Donnelly
Robert's school Groupie
Ann Marie Murray
Steve
Loui Vangelder
Toddler Emily
Sadie Fitzmaurice
Toddler Emily
Hunter Fitzmaurice
Male Student
Conor Knox
Young Arden
Kai Power
Trapeze Artist
Kate Parry
Bored Student (uncredited)
Bobby Calloway
Girl Swimming (uncredited)
Meghan Jones
Fan in Bookshop (uncredited)
Peter Robbie