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

Vince McKewin

Bob