Hal Holbrook
— Hays Stowe
E.G. Marshall
— Senator Stowe
Joseph Campanella
— Jordan Boyle
Jack Albertson
— Dr. Chanute
Pat Hingle
— Salem Chase
Sharon Acker
— Erin Stowe
James Douglas
— Howard Eager
Mike Kellin
— Professor Duke
Jeff Corey
— Beiseker
Bernie Hamilton
— House
Michael Bell
— Elliot Morse
Cindy Eilbacher
— Norma Stowe
Adrienne Marden
— Amanda Shamokin
Harry Basch
— Health Commissioner
Robert Heinz
— Preston Gardiner
Marian Collier
— Nurse
Robert Quarry
— Hollis Kent
Ray Ballard
— Bellboy (uncredited)
George DeNormand
— Reporter (uncredited)