John F. Donovan

Kit Harington

Sam Turner

Natalie Portman

Rupert Turner

Jacob Tremblay

Grace Donovan

Susan Sarandon

Adult Rupert Turner

Ben Schnetzer

Barbara Haggermaker

Kathy Bates

le narrateur/Man in Diner

Michael Gambon

Audrey Newhouse

Thandiwe Newton

Jeanette

Bella Thorne

Mrs. Kureishi

Amara Karan

James Donovan

Jared Keeso

Will Jefford Jr.

Chris Zylka

Amy Bosworth

Emily Hampshire

Liz Jones

Sarah Gadon

Aunt Anne

Jane Wheeler

Uncle Patrick

Craig Eldridge

Cedric James

Lukas Rolfe

Aunt Faith

Susan Almgren

Eric

Dakota Jamal Wellman

Big Billy

Ari Millen

Rupert's Boyfriend

Gijs Blom

Bonnie

Leni Parker

Adam's Mother

Ellen David

Trish

Katy Breier

News Anchor

Anne Mroczkowski

Police Officer

James Marchant

Hellsome High Actress

Alison Louder

Late Night Show Host

Rob Baker

Hellsome High Actor

Matthew Raudsepp

Producer

Harry Standjofski

Director

Pat Kiely

Director

Trevor Hayes

Journalist #1

Sangita Patel

Journalist #2

Hamza Haq

Editor #1

Brent Skagford

Barmaid

Guenièvre Sandré

Cashier

Allan Michael Brunet

Porter

Carolyn Fe

Cashier

Michael Brunet

Sasha

Connor McMahon

Lawyer #1

Michael Dozier

Lawyer #2

Harvey Diamond

Editor #2

Angie Reid

Fan in the Club

Pierre-Luc Lafontaine

Journalist #2

Holly Bernier

Young Fan

Vincent Messina

Security Guard

Niko Nikolov

Club Boy #1

Patrick Allard

Young Fan

Rebecca Windheim

Young Daniel (uncredited)

Sam Taylor Buck

Editor #2 (uncredited)

Daniel Murphy

Driver (uncredited)

Karl Farrer