(Special Investigations Unit) (Korean: 특수본; RR: Teuksubon) is a 2011 South Korean action crime film directed by Hwang Byeong-gug, starring Uhm Tae-woong and Joo Won.

Seong-beom is a foul-mouthed, hot-tempered detective with uncanny animal instincts in the violent crimes section who has never failed to solve a case.

While he is on an undercover operation, he hears that a colleague of his has been brutally murdered by an unknown assailant.

They then receive a suspicious shoot to kill order from high-ranking police officials once the suspect is found.

The team must fight against conspiring powers responsible for the crime, all the while dealing with tension and mistrust that begin to build within the police force itself as more information about the case begins to surface that may implicate corrupt detectives within their ranks.