Shortly after moving into a dark, brooding mansion, a psychologist and his co-workers are terrorized by a horrible evil being.
Richard Crenna
C.J. Arnold
Joanna Pettet
Dr. Caroline Arnold
Andrew Prine
Prof. Raymond Guy
Cassie Yates
Mary Harper
George O'Hanlon, Jr.
Pete Brooks
Lynne Moody
Felicia Allen
Mary Louise Weller
Laurie Belman
Robert Viharo
Dwight
