
A successful professor has his life disrupted by a secret from his past — in his college days he became a member of a powerful secret society, and now the society has a job for him.
Cast

Glenn Ford
Prof. Andrew 'Andy' Patterson

Rosemary Forsyth
Vivian Masters Patterson

Dean Jagger
Chad Harmon

Maurice Evans
Harry Masters

Will Geer
Mike Patterson

Eduard Franz
Dr. Konstantin Horvathy

William Conrad
Bart Harris

Robert Pine
Phillip Dunning

William Smithers
Dr. Jerry Fielder
Logan Field
Thaddeus Burns

Dabney Coleman
Agent Shepard
Scott Graham
Weber

James McEachin
Police Detective

Robert Clarke
Dr. Louis Bauier (uncredited)

Lisabeth Hush
Betty Fielder (uncredited)

Mark Roberts
DA Avery Hazelton (uncredited)
Crew

Paul Wendkos
Director
David Karp
Writer, Producer
Carroll Sax
Editor
Robert B. Hauser
Director of Photography

Kurt Neumann
Assistant Director
Hugh Benson
Executive Producer
Hoyt Bowers
Casting
Richard Egan
Costume Design
Constance Edney
Costume Design
Gale McGarry
Hairstylist
Lou LaCava
Makeup Artist
Jerry Kosloff
Sound Mixer

Jerry Goldsmith
Original Music Composer
Morton Stevens
Music Supervisor
Ray Molyneaux
Set Decoration
Edward O. Denault
Production Manager
Michael S. Glick
Unit Production Manager
William Craig Smith
Art Direction
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