Glenn Ford
Prof. Andrew 'Andy' Patterson
Rosemary Forsyth
Vivian Masters Patterson
Maurice Evans
Harry Masters
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
James McEachin
Police Detective
Robert Clarke
Dr. Louis Bauier (uncredited)
Lisabeth Hush
Betty Fielder (uncredited)
Mark Roberts
DA Avery Hazelton (uncredited)