When a dark force begins to destroy a couple's happiness, they decide to turn to a parapsychologist who discovers that the husband is possessed by a demon.

Phylicia Rashād
as Dr. Marion Hale (Psychiatrist)

Sheila McCarthy
as Jenny

Nicky Guadagni
as The Neurologist

Stephen Lang
as Michael

Roger Rees
as Robin Banks (Hypnotist)

Michael Riley
as Dr. Nick Galler

Bernard Behrens
as Dr. Jerry

Cecilley Carroll
as Allyson

Vernon Chapman
as The Priest

Richard Chevolleau
as David