Principal Cast
George C. Scott
as John Russell
Trish Van Devere
as Claire Norman
Melvyn Douglas
as Sen. Joseph Carmichael
Jean Marsh
as Joanna Russell
John Colicos
as Captain DeWitt
Barry Morse
as Dr. Pemberton
Madeleine Sherwood
as Mrs. Norman
Helen Burns
as Leah Harmon
Frances Hyland
as Mrs.Elizabeth Grey
Ruth Springford
as Minnie Huxley
Eric Christmas
as Albert Harmon
Roberta Maxwell
as Eva Lingstrom
Bernard Behrens
as Prof. Robert Lingstrom
James B. Douglas
as Eugene Carmichael
J. Kenneth Campbell
as Security Guard
