Stefanie Scott as Quinn Brenner

Lin Shaye as Elise Rainier

Dermot Mulroney as Sean Brenner

Leigh Whannell as Specs

Angus Sampson as Tucker

Steve Coulter as Carl

Hayley Kiyoko as Maggie

Tom Gallop as Dr. Henderson

Tate Berney as Alex Brenner

Corbett Tuck as Danielle

Tom Fitzpatrick as Bride in Black

Jeris Poindexter as Harry

Ele Keats as Lillith Brenner

James Wan as Theater Director

Joseph Bishara as Lipstick-Face Demon

Michael Reid MacKay as The Man Who Can't Breathe

Phyllis Applegate as Grace

Phil Abrams as Mel

Erin Anderson as Two-Faced Woman

Amaris Davidson as Nurse

Ashton Moio as Hector

Rubén Garfias as Ernesto

Fawn Irish as Lambert Woman

Taylor John Smith as Teenage Boy

Adrian Sparks as Jack Rainier

Jacob Crawford as Male Nurse

Garrett Ryan as Young Josh

Anna Ross as Dead Teenage Junkie (uncredited)

John Zaffis as Theatre Patron (uncredited)