Park Hae-il, below) receives an anonymous phone call alerting him to the death of his estranged dad, and so he returns to the quiet mountain community where he father lived and worked. The film, directed by Kang Woo Suk (the Public Enemy series and Silmido) is neither the bloodiest nor the strangest nor the most concerned (as so many South Korea movies are) with vengeance, but it is a very good example of what that country's filmmakers are able to get right: a convulsively interesting story with a timely theme handled in a style that keeps you glued to the screen.
Jung Jae-young, below) and his minions. This part of the story is plain enough, but the how and why all this has happened takes some unraveling, as well as the back story for each of the quartet of sleazy helpers the police chief has in tow, and the young woman who provides these men with their off-hours entertainment.
CJ Entertainment, Moss, running two hours and 22 minutes (South Korean movies tend to be long but worth the time) is available via Netflix streaming and elsewhere, and is also for sale on DVD.