Episode 1 S01 E01

Kwon Sang-woo (as Han Du-jin) Kim Hee-won (as Lee Chun-seok) Lee Sang-yi (as Go Gi-seok) Bae Da-bin (as Do Na-hee) Shin Hyeon-seung (as Kim Ji-soo) Sung Dong-il (as Chief Do Won-il) Nam Tae-woo Park Ho-san (as Baek Cheol) Choi Moo-seong (as Hwang Man-dae) Han Ji-hye (as Bae Eun-sook) Ju Jin-mo (as Mayor of Seoul)

police policeman crime investigation accident investigate police procedural seoul, south korea han river