Unriddle
When a hard-nosed detective reluctantly partners with an informant to solve complex cases, she uncovers links to a particularly puzzling cold case.
Starring Rui En, Chen Liping, Sora Ma, Paige Chua, Yuan Shuai, Brandon Wong, Adam Chen
Watch "Unriddle" on Netflix released in 2010. It's a mystery and thriller show, and has a rating of 7.5 out of 10 from Imdb which is usually fine for this kind of show.