This film was introduced in a number of international film festivals and I saw it during one of them and glad I did. It started slowly with main character Tanaka, journalist, (Satoshi Tsumabuki) carrying the story line forward by interviewing different people involved in a murder case. It's easy to miss some plot lines as a lot of characters were introduced one by one, especially with the names and flashbacks. I think that's the film's direction as it leaves the viewers to connect the dots on their own progressively, dropping hints here and there. As others have suggested, recommended to watch second time as some of the earlier scenes will make sense. I myself came out from the cinema questioning myself why and how, trying to make sense some of the plots. It is one of the best crimes, thriller movies worth the watch for those who enjoy the genre.

Both Satoshi and Hikari Mitsushima (female lead) threw in some of the best performances. I am well familiar with those two and quite enjoyed some of their previous films. They played some of the difficult scenes really well.

Please give it a watch, anyone who don't mind the slow pace and story gradually unravelling up to the final climax. For reference, this film is first feature length film from director Kei Ishikawa who studied film directing in Poland on government scholarship.

"Gukôroku" (or "Traces of Sin" in its English title) is a highly entertaining movie, with an incredible atmosphere, great pace and some food for thought that only falters a little bit in the end because of a tad overlong running time.

Satoshi Tsumabuki plays Tanaka, a journalist that decides to poke his nose in the old case of the murder of a family. His boss, knowing of his family situation (his sister is detained because of neglecting the care of her baby) decides to let him tackle the old case. Tanaka goes around meeting old friends from the family, like co-workers or university friends, little by little discovering a world of darkness, selfishness and an overall ugly image of a shallow and competitive culture. Tsumabuki does a great job in keeping his Tanaka a detached, curious viewer of the stories that unfold around him, his character just the medium that connects the viewer with the story. Everyone else does also a great job in creating characters that will make the viewer squirm and writhe in disgust, sadness or fear. The direction helps, keeping things simple and clear.

The tone of the movie is great, even though it is a little bit uneven in the time jumps and the moments it turns to Tanaka's relationship with his sister. The music and dark palette intensify the dread and dark tone of the movie. And when the twists appear, because there are a couple of them, they add to the movie (even if one or two are not particularly surprising).

"Gukôroku" is a great movie. Just be ready for a descent into human darkness.

A journalist investigates the unexplainable, brutal murder of an upper class family, slowly piecing together an intricate puzzle and revealing a web of intertwined relationships between have and have-nots in the caste-like society of a Japanese city.

I really enjoyed both the acting as well as the direction. Every single scene looked perfect, neat and tidy.