- Jameson Brewerwriter (as James Brewer) &
- Gianfranco Paroliniwriter (as Robert F. Atkinson) &
- Paul Alfred Müllernovel (as Bert F. Island)
- Giuseppe Mattei(as Pino Mattei)
Rest of cast listed alphabetically
- James E. Boogle(uncredited)
- Kunjai Ninakanit(uncredited)
- Chana Sriubol(uncredited)
- Marsh Thomson(uncredited)
- Peter Homfeldexecutive producer
- Robert Saxtonpresentation producer (english version)
- Theo Maria Wernerproducer (as Theo M. Werner)
- Ralph Zuckerexecutive producer
- Francesco De Masicomposer (uncredited)
- Niko Matulproduction designer (uncredited)
- Brad Harrisstunts (uncredited)
- Rüdiger Meichsnercamera operator
- Nella Nannuzziassistant editor (uncredited)
- Lothar Blumhagenvoice dubbing: Marsh Thomson (uncredited)
- Rainer Brandtvoice dubbing: Brad Harris (uncredited)
- Karlheinz Brunnemannvoice dubbing: Taxi Driver/Man on Telephone/Airport Announcement (uncredited)
- Wolfgang Draegervoice dubbing: Bellboy/Cab Driver/Policeman/Island Warden/Landru's Assistant/Driver Chartered Boat (uncredited)
- Gerd Duwnervoice dubbing: Midget Doorman/Bird Seller/Bespectacled Man in Boat (uncredited)
- Almut Eggertvoice dubbing: Rotraud de Nève (uncredited)
- Brigitte Grothumvoice dubbing: Kunjai Ninakanit (uncredited)
- Beate Hasenauvoice dubbing: Monica Pardo (german version) (uncredited)
- Gert Günther Hoffmannvoice dubbing: Tony Kendall (uncredited)
- Claus Jurichsvoice dubbing: Man on Ship (uncredited)
Crew believed to be complete
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