Castle of Sand
Castle of Sand Suna no utsuwa is a 1974 Japanese police procedural directed by Yoshitar Nomura, based on the novel Inspector Imanishi Investigates by Seicho Matsumoto.
This sets off a wide ranging investigation that covers vast swaths of geography, changing social mores, and time. The investigation ends with an emotional and heartbreaking conclusion, all the more shattering because the reason for the crime need no longer exist in the world.
Source: Wikipedia
