Detective K: Secret of Virtuous Widow(2011)

The film is about the adventures of Chosan's best detective (Kim Myeong-min), who was commissioned by the king to investigate a series of murders across the country. During this secret mission, he meets Oh Dal-soo (Oh Dal-soo), who eventually becomes one of his own people, and also meets Han Ji-min (Han Ji-min), an influential business woman who plays an important role in this case. During the deep exploration of the mystery of the story, they discover They uncover disturbing secrets and find out that those murders were related to a big conspiracy that was supposed to shake the entire Chosan country...