Water has many good uses, but it can also drench you and drown you. In the South Korean film Innocent Crush (or Innocent Thing) water is a symbol for a psychic drenching—with something bad—and death. An unstable high school girl, Young-eun, is hard on the emotions of her gym teacher, Joon-gi, and his pregnant wife. She obsessively loves Joon-gi and starts an affair with him. Joon-gi is driven to quiet despair, and must finally fight for his betrayed wife’s life.

The material is familiar, the film melodramatic—and a trifle wobbly. But it’s riveting. It was impeccably directed by Tae-gyun Kim, and the actors are strong. Young-eun may be unstable but Jo Bo-ah, who portrays her, is far from unsubtle. The sex scenes, I’m inclined to mention, are done without graphic nudity. This 2014 feature is available on Tubi (and Pluto?). Get drenched by it.

(In Korean with English subtitles)