Cliff Robertson
as Michael Courtland
Geneviève Bujold
as Elizabeth Courtland/Sandra Portinari
Stocker Fontelieu
as Dr. Ellman
Sylvia `Kuumba' Williams
as Maid
Wanda Blackman
as Amy Courtland
Patrick McNamara
as Third Kidnapper
Stanley Reyes
as Insp. Brie
Nick Kreiger
as Farber
Don Hood
as Ferguson
Andrea Esterhazy
as D'Annunzio