Glenn Ford
Prof. Andrew 'Andy' Patterson
Acting
Rosemary Forsyth
Vivian Masters Patterson
Acting
Dean Jagger
Chad Harmon
Acting
Maurice Evans
Harry Masters
Acting
Will Geer
Mike Patterson
Acting
Eduard Franz
Dr. Konstantin Horvathy
Acting
William Conrad
Bart Harris
Acting
Robert Pine
Phillip Dunning
Acting
William Smithers
Dr. Jerry Fielder
Acting
Logan Field
Thaddeus Burns
Acting
Dabney Coleman
Agent Shepard
Acting
Scott Graham
Weber
Acting
James McEachin
Police Detective
Acting
Robert Clarke
Dr. Louis Bauier (uncredited)
Acting
Lisabeth Hush
Betty Fielder (uncredited)
Acting
Mark Roberts
DA Avery Hazelton (uncredited)
Acting