Mark of the Tortoise

English millionaire Sir Cyrus Bradley is being blackmailed by “The Tortoise” Crime Syndicate. He is to pay £ 100,000.00 Pounds to stay alive and not be murdered. After his refusal to pay the money, he is quickly killed. Cyrus‘ nephew, Don Micklem, plans to avenge the death of his uncle and sets out on a quest to expose “The Tortoise“…

• Johanna SibeliusScreenplay
• Eberhard KeindorffScreenplay
• Alfred VohrerDirector
• Will TremperWriter
• Martin BöttcherOriginal Music Composer

• Hildegard KnefLorelli
• Götz GeorgeDonald "Don" Micklem
• Richard MünchMario Orlandi di Alsconi
• Heinz ReinckeInspektor Dickes
• Carl LangeCrantor
• Pinkas BraunFelix
• Adelheid SeeckLady Helen Bradley
• Hans PaetschSir Cyrus Bradley
• Jan HendriksCarlos
• Klaus KinskiShapiro
• Hans ClarinHarry Mason
• Joachim RakeButler Dixon