Simon Cordier, a French magistrate and amateur sculptor comes into contact with a malevolent entity. The invisible - yet corporeal - being, called a "horla" is capable of limited psychokinesis and complete mind control.
Vincent Price
as Simon Cordier
Nancy Kovack
as Odette Mallotte
Chris Warfield
as Paul Duclasse
Elaine Devry
as Jeanne D'Arville
Ian Wolfe
as Pierre
Stephen Roberts
as Captain Robert Rennedon
Lewis Martin
as Father Raymonde
Mary Adams
as Louise
Edward Colmans
as Andre D'Arville
Nelson Olmsted
as Dr. Borman
Harvey Stephens
as Louis Girot
Don Brodie
as Marcel
