Directed by Ki-hwan Oh   Written by Jang-Hwan Jung   Kyung-ok Kang   Hyo-Chul Lee   Shin-ae Lee   Ki-hwan Oh   Dong-Sun Shin   Cast Jin-Seo Yoon ... Ga-in Kim Park Gi-woong ... Sung-min Lee Ki-woo ... Hyung-Joong (as Ki-woo Lee) Yu-seon Ham ... Sang-kyung Kim So-eun ... Ga-yun Kim Jin-geun Kim ... Dae-yong Hwang Yu-mi Jeong ... Myung-hee Lee Kan-Hee ... Eun-kyung Yu-jeong Seo ... Jung-sun Jeon Gook-hwan ... Ji-sun's Father Jeong In-gi ... Detective Jo (as In-gi Jeong) Yeon Je-wook ... Choi Sang-kyung (as Je-wook Yeon) Baek Joo-Hee ... Hyun-Joong's mother Lee Kyung-young ... Ga-in's Father Ahn Nae-sang   Oh Yeon-Seo ... (as Haet-nim Oh) Seo Yun-jae   Produced by Moo-Ryoung Kim   Original Music by Kim Jun-seok

Additional Info Premiere: August 22, 2007 Theatrical Release: January 09, 2009 DVD Release: March 31, 2009 Country: Distributor: Lions Gate Home Entertainment Websites: Alternate Titles Du Saram-yida Someone Behind You Production Companies Mogabi Pictures Happy Film Distributors After Dark Films   (2009) (United States) (theatrical) 24 Frames   (2009) (United States) MandF   (2007) (World-wide) (DVD) Filming Locations Seoul, South Korea Rating Stats Overall Rating 5.5 / 10 Our Rating -- / 10 Your Friends -- / 10 Male Users -- / 10 Female Users -- / 10 Site Ranking #8,323 / 21,254 Site Ranking #8,319 Hard To Die (1993) #8,320 Blackenstein (1973) #8,321 Blood Beat (1983) #8,322 Total Recall 2070: Season 1 (1999) #8,323 Voices (2007) #8,324 2 Lava 2 Lantula (2016) #8,325 All I Need (2016) #8,326 Haunting Of Winchester House (2009) #8,328 Fear (2023)