- Country: South Korea
- Genres: Crime, Drama, Thriller
- Release: 2017-10-11
- Director: N/A
- Writers: N/A
- Language: Korean
- Stars: Ji-won Baek , Soo-hyun Hong , Soo-hyun Hong , Choi Wonyoung , Choi Wonyoung , Do-Hwan Woo , Park Sung-hoon , Ji-Tae Yoo , Jae-yoon Jo , Hwa-young Ryu , Kim Hye-seong , Ji-man Eom
- Runtime: 60 min
- Awards: 2 wins & 3 nominations
- AKA: マッド・ドッグ〜失われた愛を求めて〜 (Japan) , Mad Dog (India) , Mad Dog (Turkey) , Maedeudok , Mad Dog (United States of America) , Mad Dog (United Kingdom) , Maedeudok (Korea) , Mad Dog (Germany) , Maedeudok (Indonesia) , Mad Dog (India) , Maedeudok (South Africa) , Maedeudok (France, French Republic) , Mad Dog 疯狗 (China), 매드독 (South Korea)
- Plot: Choi Kang-woo, a former police and leader of Taeyang Insurance's investigators team, decides to create his own investigation team, after an airplane crash that took the life of his wife and son. He then meet Kim Min-joon, a genius former swindler whose brother was also a victim of the crash, thus begin their rivalry and cooperation.
- IMDB:tt7396412
Mad Dog Cast · · · ALL
Ji-Tae Yoo
Choi Kang-Woo
Do-Hwan Woo
Kim Min-Joon
Hwa-young Ryu
Jang Ha-Ri
Jae-yoon Jo
Park Soon-Jung
Kim Hye-seong
On Noo-Ri
Soo-hyun Hong
Cha Hong-Joo
Choi Wonyoung
Joo Hyun-Ki
In-hwan Park
Byun Guk-Jin
Ye-June Kim
Choi Joo-won
Yeong-Hoon Kim
Kim Bum-Joon
Lee Joon-hyuk
Jo Han-Wu