Kirk Douglas as Jack Andrus

Edward G. Robinson as Maurice Kruger

Cyd Charisse as Carlotta

George Hamilton as Davie Drew

Claire Trevor as Clara Kruger

Daliah Lavi as Veronica

James Gregory as Brad Byrd

Rosanna Schiaffino as Barzelli

Joanna Roos as Janet Bark

George Macready as Lew Jordan

Mino Doro as Tucino

Stefan Schnabel as Zeno

Vito Scotti as Assistant Director

Tom Palmer as Dr. Cold Eyes

Erich von Stroheim Jr. as Ravinksi

Leslie Uggams as Chanteuse

Edit Angold as German Tourist (uncredited)

Albert Carrier as Mario (uncredited)

Lilyan Chauvin as Bar Girl (uncredited)

Steve Carruthers as Dignitary (uncredited)

Bess Flowers as Guest at Anniversary Banquet (uncredited)

Charles Horvath as Bouncer (uncredited)

Alberto Morin as Cameraman (uncredited)

Tony Randall as Ad Lib in Lounge (uncredited)

Cilly Feindt as Lady Godiva (uncredited)

Meri Welles as Lew Jordan's Wife (uncredited)