Mad Dog
매드독 (original)
After losing his family in a tragedy, a former detective joins hands with a brilliant swindler to hunt down ugly truths and expose insurance crimes.
Starring Yoo Ji-tae, Woo Do-hwan, Ryu Hwa-young, Jo Jae-yoon, Kim Hye-seong, Hong Soo-hyun, Choi Won-young, Jang Hyuk-jin, Park In-hwan, Park Ji-yeon
It's a crime and drama show, and has a rating of 7.6 out of 10 from Imdb which is usually fine for this kind of show.
Watch it here
Not found streaming from United States.