Katie Holmes as Kim

Guy Pearce as Alex Hirst

Bailee Madison as Sally Hirst

Jack Thompson as Harris

Alan Dale as Jacoby

Emelia Burns as Caterer

Nicholas Bell as Psychiatrist

James Mackay as Librarian

Eddie Ritchard as Housekeeper

Bruce Gleeson as Buggy Driver

Gary McDonald as Blackwood

Carolyn Shakespeare-Allen as Airport Cart Driver

Julia Blake as Mrs. Underhill

Trudy Hellier as Evelyn Jacoby

Terry Kenwrick as Bill

Grant Piro as Creature (voice)

Todd MacDonald as Creature (voice)

Dylan Young as Creature (voice)

Guillermo del Toro as Creature (Voice)

Libby Gott as Nurse

Angus Smallwood as Creature (voice)

David Tocci as Workman

Lance Drisdale as Policeman

Abbe Holmes as Joanne (voice)