Prof. Andrew 'Andy' Patterson

Glenn Ford

Acting

Vivian Masters Patterson

Rosemary Forsyth

Acting

Chad Harmon

Dean Jagger

Acting

Harry Masters

Maurice Evans

Acting

Mike Patterson

Will Geer

Acting

Dr. Konstantin Horvathy

Eduard Franz

Acting

Bart Harris

William Conrad

Acting

Phillip Dunning

Robert Pine

Acting

Dr. Jerry Fielder

William Smithers

Acting

Thaddeus Burns

Logan Field

Acting

Agent Shepard

Dabney Coleman

Acting

Weber

Scott Graham

Acting

Police Detective

James McEachin

Acting

Dr. Louis Bauier (uncredited)

Robert Clarke

Acting

Betty Fielder (uncredited)

Lisabeth Hush

Acting

DA Avery Hazelton (uncredited)

Mark Roberts

Acting