In the film, which was written and directed by Park Chan-wook, Catholic priest Sang-hyun (played by South Korean staple Sang Kong-ho) experiences a startling realization he's in love with his friend's wife, and suddenly, being with her by any means necessary seems like the cure for the doubt and depression hidden by his devout exterior. A relatively loose adaptation of French writer Émile Zola's novel Thérèse Raquin, the 2009 film Thirst - called Bakjwi, or 'bat,' in South Korea - is an utterly unique story of love, horror, and gore, and also owns an interesting distinction in South Korean cinema as the first movie in the country's history to contain full frontal male nudity.