Connection
Someone causes a narcotics unit detective to become addicted to drugs. What is the connection between them?
Season 1
Cast
Ji Sung
Jang Jae-gyeong
Jeon Mi-do
Oh Yoon-jin
Lee Hyun So
Park Joon-Seo (teen)
Kwon Yul
Park Tae-jin
Kim Kyung-nam
Won Jong-soo
Lee Sang-jun
Kim U-sung
Jung Yoo-min
Choi Ji-yeon
Jung Soon-won
Heo Joo-song
Yoon Na-moo
Park Jun-seo
Seo Yi-ra
Oh Soo-hyun
