Revenge is a topic commonly used in movies, but few revenge stories have left a mark as incredible as Park Chan-wook’s 2003 revenge thriller Oldboy. Since its release, it has become one of the most famous neo-noir films of all time, and one of the best-known pieces of international cinema amongst English-speaking viewers. Its brutal narrative includes elements of vengeance, mystery, action, and psychological drama, culminating in a mind-blowing plot twist that remains one of the most shocking in cinema history, even two decades after its release.