Hiding from the waiting world

Yoon Do-joon, a somewhat mentally challenged lad, is convicted of murder. His mother, an acupuncturist by trade, is convinced his only son couldn't be responsible for such a heinous act, so she opts to look into the case. To save his beloved son. Despite hits and misses, her investigation is thorough. Too thorough. Bong Joon Ho's (Parasite, The Host, Memories of Murder) 2009 movie and it holds much the same dark humour as his other works. Impressive.