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“…
Screenplay: Johanna Sibelius, Eberhard Keindorff
Director: Alfred Vohrer
Writer: Will Tremper
Director of Photography: Bruno Mondi
Producer: Horst Wendlandt
Mark of the Tortoise (1964) - English Trailer