Original Title: 특별수사: 사형수의 편지
Proof of Innocence
Pil-jae, an ex-cop who is now working as an illegal law broker at a law firm, receives a letter from a death-row convict named Soon-tae, who was wrongly accused and arrested for the murder of the daughter-in-law of a major conglomerate. After reading Soon-tae’s letter, Pil-jae gets the feeling that there is someone behind the murder case and begins to search for clues to solve the case. As his investigation progresses, Pil-jae realizes that the case is more complicated than he thought.
