Peter Lee Lawrence

as Loring Vanderbuilt

Luis Dávila

as Mark Harrison/Francis Parker

Tano Cimarosa

as General Valiente

Antonio Gradoli

as Braddock

Barbara Carroll

as Miss Braddock

Agnès Spaak

as Daphne Vandervelt

Nello Pazzafini

as Billiard Player (as Giovanni Pazzafini)

Silvio Bagolini

as Stevens