The Mystery of the Cube has an interesting plot but the execution in the movie didn't deliver.
Four people are drawn to a man's peculiar knowledge of a popular poet. Inside the poet's work lies a mystery and the group thoroughly excavates information about the past. When a member of their group dies afterward uploading a fictional tale of the poet on the internet, they now race to find out the truth before they will be hit next.
This movie is a typical and rather interesting mystery in sacks of historical facts and hearsay. The English subtitles confused me because it didn't clear some things when the plot was thickening.
Overall it was worth wasting your time for an hour and forty minutes.