John Lithgow
Jud Crandall
Jason Clarke
Louis Creed
Frank Schorpion
Rachel's Father
Amy Seimetz
Rachel Creed
Maria Herrera
Marcella
Linda E. Smith
Rachel's Mother
Nina Lauren
Nurse Nina
Alison O'Donnell
Party Guest #1
Naomi Frenette
Upset Student
Jeté Laurence
Ellie Creed
Lucas Lavoie
Gage Creed
Hugo Lavoie
Gage Creed
Obssa Ahmed
Victor Pascow
Simon Pelletier-Gilbert
Party Guest #3
Ines Feghouli Bozon
Halloween Kid #1 (uncredited)
Sonia Maria Chirila
Young Rachel
Suzi Stingl
Norma
Kelly Lee
Nurse Kelly
Ambre Dioh-Dikongué
Halloween Kid #4 (uncredited)
Jacob Lemieux
Mouse Face
Bailey Thain
Kid #1 (uncredited)