Whitley Strieber
Anne Strieber
Dr. Janet Duffy
Alex
Sarah
Andrew Strieber
Fireman
Mrs. Greenberg (as Dee Dee Rescher)
Mother
Father
Praying Mantis Girl
Woman from Apartment
Second Grade Girl (as Juliet Sorcey)
Teacher
Tall Boy
Woman on Bus
Lab Technician
Whitley (5 years)
Man in Hallway
Dr. Friedman
Patrick
Nancy
Sally (as Irene Forrest)
Laurie
Bob
Alien Abductee (uncredited)
Magician's Assistant (uncredited)