Brett Halsey as Bert Morris

Pier Angeli as Paula Krauss

Gastone Moschin as Boris

Dana Andrews as Col. Lancaster

Tania Béryl as Madeleine

George Wang as Ming

Alessandro Sperli as Karalis

Marco Guglielmi as Kurt

Renato Baldini as Belkeir

Mario Valdemarin as Willie

Luciana Angiolillo as Miss Hopkins

Luciano Pigozzi as Leonida

Tino Bianchi as Doctor Van Dongen

Massimo Righi as Johnny Davis

Franco Beltramme as Serghey

Giulio Maculani as Stanko