Castle of Sand (砂の器, Suna no utsuwa) is a 1974 Japanese police procedural film directed by Yoshitarō Nomura, based on the novel Suna no Utsuwa by Seicho Matsumoto.

[1][2] The film tells the tale of two detectives, Imanishi (Tetsuro Tamba) and Yoshimura (Kensaku Morita), tasked with tracking down the murderer of an old man, found bludgeoned to death in a rail yard.

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 no longer exists in the world.

You can help Wikipedia by expanding it.This article about a crime thriller film is a stub.