Edward Connell
David FieldingBarbara Hewitt
Susan TurnerJack Woods
AsmodeusRobin Christopher
VickiJames Phillips
Reporter SloanFritz Leiber Jr.
Dr. Arthur WatermannPatrick Burke
Doctor BransonSharon Gray
NurseLouis Clayton
Old man in caveNorvelle Brooks
Irving L. Lichtenstein
James Dwion
The OrderlyJack H. Harris
Detective Harrison (uncredited)Chuck Niles
Reporter Sloan (voice) (uncredited)Jim Duron
The Green Giant