American professor John Holden arrives in London for a conference on parapsychology only to discover that the colleague he was supposed to meet was killed in a freak accident the day before. It turns out that the deceased had been investigating a cult lead by Dr. Julian Karswell. Though a skeptic, Holden is suspicious of the devil-worshiping Karswell. Following a trail of mysterious manuscripts, Holden enters a world that makes him question his faith in science.
Jacques Tourneur | Director |
Charles Bennett | Screenplay |
Hal E. Chester | Screenplay |
M.R. James | Short Story |
Frank Bevis | Producer |
Edward Scaife | Director of Photography |
Michael Gordon | Editor |
Robert Lennard | Casting |
Ken Adam | Production Design |
Peter Glazier | Assistant Art Director |