Proof of Innocence

Proof of Innocence

Available on Viki, Prime Video
An ex-cop working as the manager for an attorney receives a letter from a prisoner who insists he is innocent. When the manager learns the detective in charge of the case is a former rival, he begins his own investigation.
Starring Myung-min Kim, Sung Dong-il, Kim Sang-Ho
Director Jong-kwan Kwon