Hardness 10

1974–1975· 90 min★ 6.9· Action & Adventure, Crime

There is only one substance on earth with a hardness of 10: diamonds. The brutal business of finding the rough stones is at least as tough, and the creators of this series have knitted a gripping adventure out of it. The story of ...

Cast: Olga Georges-Picot, Wolfgang Kieling, Arthur Brauss

Director: Gordon Flemyng