Curd Jürgens
Kapitän Markus Jolly
Heinz Reincke
Oliver Kniehase
Johanna von Koczian
Dr. Katrin Andersen
Fritz Tillmann
Konsul Armin von Prossnitz
Gerhart Lippert
Klaus Ritter
Rolf Olsen
Polizeipräsident Herculano
Friedrich Joloff
Dr. Albeniz
Emilio Schuberth
Gilbert Paon
James Graser
James Sanders
Elisabeth Flickenschildt
Lady Scarlett
Poldo Bendandi
Chief Tax Officer (uncredited)
Beryl Cunningham
Chiquita (uncredited)
Thomas Danneberg
Klaus Ritter (voice) (uncredited)
Hans Hessling
Polizeipräsident Herculano (voice) (uncredited)
Gerda-Maria Jürgens
Frau Kuschke (uncredited)
Giulio Marchetti
Dr. Castell (uncredited)
Lenka Novak
Nurse (uncredited)
Janine Reynaud
Woman in Cabin of Yacht (uncredited)
Bill Vanders
Jolly's Crewman (uncredited)
Ernest Van-Mohr
(uncredited)