Cliff Robertson
Michael Courtland
Geneviève Bujold
Elizabeth Courtland / Sandra Portinari
John Lithgow
Robert Lasalle
Sylvia Kuumba Williams
Maid
Wanda Blackman
Amy Courtland
J. Patrick McNamara
Third Kidnapper
Stanley J. Reyes
Inspector Brie
Stocker Fontelieu
Dr. Ellman
Andrea Esterhazy
D'Annunzio
Tom Felleghy
Italian Businessman
Nella Simoncini Barbieri
Mrs. Portinari
John Creamer
Justice of the Peace
Clyde Ventura
Ticket Agent
Robert Harper
Man in Airport (uncredited)