Mia Hall

Chloë Grace Moretz

Kat

Mireille Enos

Adam Wilde

Jamie Blackley

Denny Hall

Joshua Leonard

Kim Schein

Liana Liberato

Willow

Lauren Lee Smith

Gramps

Stacy Keach

Grandma

Gabrielle Rose

Nurse Ramirez

Aisha Hinds

Teddy Hall

Jakob Davies

Liz

Ali Milner

Young Mia

Gabrielle Cerys Haslett

Henry

Adam Solomonian

Surgeon

John Emmet Tracy

Liddy

Chelah Horsdal

Nurse Davis

Christine Willes

Astrid

Arielle Tuliao

Cute Groupie

Sarah Grey

Male EMT

William Vaughan

Female EMT

Aliyah O'Brien

Surgeon

Paul Jarrett

Teddy's Surgeon

Giles Panton

Orderly

Dave Collette

Surgeon for Driver

David Orth

Nurse

Camille Atebe

Wife of Driver

Annabel Kershaw

Mosh Pit Oaf

Toby Hargrave

Punker

Primo Allon

Music Aficionado

John Shaw

Security Guard

Michael Adamthwaite

Skeleton

Jameson Trenholm

Cool Rocker Guy

Donnie MacNeil

Cute Groupie #2

Genevieve Buechner

Herself

Alisa Weilerstein

Autograph Girl

Elisa King

Bartender

Brett Wise

High Five Guy

Steven Jeays

Orderly #2

Boyd Ferguson

Securtiy Guard #2

Sylvestra Stuart

Williamette Stone Band

Ben Klassen

Security Guard #2

Sylvesta Stuart

Williamette Stone Band

Ryan Stephenson

Williamette Stone Band

Tom Vanderkam

Bassist for Nasty Bruises

Tony Dubroy

Ronna Kress

Mia's Chorus Girl (uncredited)

Jessica Rotter

Shauna Cross

Mia Stunt Double

Heidi Ford

Stunt Dude #1

George Boutros

Stunt Dude #2

Kevin Haaland