Sin of a Family is 2011 South Korean crime film is about detective who susupcted of family who behind their son's death. It stars Shin Hyun-jun in lead role the film was produced by Shin Hyun-jun under production company and premiering at the 2010 Puchon Fantastic Film Festival.

Plot

When the body of a young boy was discovered at the lake, the police identifies him as Jeong Min-hwan, an autistic child who went missing for two months. Jo Chang-shik tasked the case but still dealing with troubled relationship with his son, along with partner. Chang-shik visited the victim's family and become suspected Min-hwan's father may behind his son's death and discovered family secerts.

Cast

• Shin Hyun-jun
  Shin Hyun-jun
  Shin Hyun-jun is a popular actor from South Korea. He is well known for portraying Ki-bong in the movie Barefoot Ki-bong and the photographer in South Korea's most popular music video "Because I'm A Girl" performed by KISS. He is best known as 아랍왕자 due to his foreign look and long eyelashes...
  
  ... Jo Chang-shik
• Jeon No-min ...Jeong In-su, the father
• Wang Heui-ji ... Go Yeong-suk, the mother
• Lee Gi-woo ... Detective Lee
• Jeong Weon-jung ... Seo, section head
• Jo Sang-yeon ... Jeong Min-hwan, the younger son
• Kim So-hyeon ... Jeong Min-heui, the daughter
• Park Chang-ik ...Jeong Min-cheol, the elder son
• Oh Yeon-hye ...Go Geum-suk, Yeong-suk's younger sister
• Kim Yong-woo ... Detective Kim
• Lee Jae-wook ... Detective Mun)
• No Yeong-hak ... Jo Gyeong-su, Chang-shik's son
• Choi Jong-hun... (young man in neighbourhood).