Writers: James Hadley Chase, Eberhard Keindorff, Johanna Sibelius
Release date: 23 Apr 1964
Countries: West Germany
Languages: German
Runtime: 90 min
Mark of the Tortoise 1964 The nephew of a murdered millionaire decides to track down his uncles killer He faces many life threatening dangers as he tries to break into the inner circle of the sinister criminal The Tortoise