All Cast
Christopher Walken
Whitley Strieber
Lindsay Crouse
Anne Strieber
Frances Sternhagen
Dr. Janet Duffy
Andreas Katsulas
Alex
Terri Hanauer
Sarah
Joel Carlson
Andrew Strieber
John Dennis Johnston
Fireman
DeeDee Rescher
Mrs. Greenberg
Aileen Fitzpatrick
Mother
R.J. Miller
Father
Holly Fields
Praying Mantis Girl
Juliet Sorci
Second Grade Girl
Irene Cagen
Sally
Paula Shaw
Woman from Apartment
Joshua John Miller
Tall Boy
Basil Hoffman
Dr. Friedman
Johnny Dark
Lab Technician
Sally Kemp
Laurie
Ingrid Vold
Magician's Assistant (uncredited)
Tifni Twitchell
Teacher
Kate Stern
Woman on Bus
Jonathan Fromdahl
Whitley (5 years)
Andrew Magarian
Man in Hallway
Paul Clemens
Patrick
Maggie Egan
Nancy