Watched all 18 episodes of Korea's 2017 Black, apparently inspired by a true to life tragedy. Detective Moo-gang Han teams up with his psychic, female girl friend Ha-ram Kang, who sees shadows on persons who are about to die, in order to save those persons and prevent them from dying. Because of an accident, a grim reaper with a mission steps in, launching the viewer into a series of life-and-death adventures.

This is a must-watch for lovers of supernatural movies, though the scenes in Episodes 1-7 are not smoothly woven together. The screenplay is based on an atypical concept of heaven and hell. The treatment of romance is adolescent rather than adult. Loose-ended scenes are set aside for too long. Shots taken with handheld cameras are unstable. In shoreline scenes, there is no continuity of cloud clusters and water vessels in the background. There are too many subplots, rendering the main plot convoluted. There is metaphysical use of time and space, but there also is too much backtracking, making the story hard to follow, especially when a lot of information is being withheld from the viewer. When an audience does not know what is going on for too long, it tends to get bored.   

Everything becomes interesting, exciting, and completely engrossing, however, from Episode 8 onward. Episode 14 is most enjoyable. 

In this 2017 movie too many characters talk aloud to themselves by way of exposition, and the cell phone frequently functions as deus ex machina. It is therefore amazing how, in a matter of five years, Korean drama has become absolutely world-class, as evidenced by its 2022 productions. Almost nothing quite matches Korean movies now in terms of screenplay writing, direction, characterization and acting, and technological advancement.