Focus Features has debuted the official US trailer for Park Chan-wook's Thirst. Thirst is directed by South Korean filmmaker Park Chan-wook, of Joint Security Area, Sympathy for Mr. Vengeance, Oldboy, Sympathy for Lady Vengeance, and I'm a Cyborg, But That's OK previously. The screenplay was co-written by Park Chan-wook and his writing partner Jeong Seo-Gyeong. This first hit theaters in Korea back in April. Focus Features will debut Thirst in limited release starting on July 31st.