Katherine Langford as Mara Carlyle

Charlie Plummer as Dylan

Yvonne Orji as Agent Rosetti

Hayley Law as Tess McNulty

Piper Perabo as Angela

Rob Huebel as Charlie

Marlowe Percival as Becky

Laine MacNeil as Jenna Dalton

Clive Holloway as Joe Dalton

Doralynn Mui as Cranberry

Kaitlyn Bernard as Skye

Jared Ager-Foster as Jed

Mellany Barros as Katelyn Ogden

Chelah Horsdal as Denise

Luvia Petersen as Dr. Rolanda

Jarrett Carlington as Perry

Peter Bundic as Steve

Bzhaun Rhoden as Harper

Braeden Shrimpton as Cole

Eva Day as Claire

Darcey Johnson as Liquor Attendant

Dolores Drake as Waitress

Francisco Trujillo Avalos-Davidson as Grieving Parent

Laura Di Cicco as Grieving Parent #2

Michael Brian as Investigator #1

Ash Lee as Investigator

Cameron Dent as Gym Teacher

Payton Lepinski as Baby Mara

Melody Nosipho Niemann as Baby Tess

Glen Pinchin as Waitress Spouse

Jason Tremblay as Officer

Milo Shandel as Officiant

Danielle Kremeniuk as Female Cop

Sophia Daly as Baby Katelyn

Paul Moniz de Sa as Katelyn's Dad

Kayt Roth as Protestor

Jason Sakaki as Skinny Kid

Jeremy Arnold as Hazmat

Brahm Taylor as Hazmat #2

Amanda Gray as Hazmat Doctor #2 (uncredited)

Junnicia Lagoutin as Student