We Must Dig Deeper
Signal – Season 1
Jae-han arrests Se-kyu for the serial burglary case, but the culprit is freed after serving a short sentence; Kyung-tae still commits murder.
Cast
Lee Je-hoon
Park Hae-young
Kim Hye-soo
Cha Soo-hyun
Cho Jin-woong
Lee Jae-han
Jang Hyun-sung
Kim Bum-joo
Jung Hae-kyun
Ahn Chi-soo
Kim Won-hae
Kim Gye-chul
Jung Han-bi
Oh Yoon-seo
Lee Yoo-jun
Jung Heon-gi
Kim Min-gue
Hwang Ui-kyung
Kang Chan-hee
Park Sun-woo
Im Hwa-young
Cha Soo-min
Choi Woo-ri
Shin Yeo-jin
Son Hyun-joo
Jang Young-cheol
Jeong Seok-yong
Oh Gyung-tae
Sieun
Oh Eun-ji
Yoo Ha-bok
Shin Dong-hoon
Im Cheol-soo
Informant
Lee Dong-ha
Han Se-gyu
Yoon Bok-sung
Attorney
Park Ji-yeon
Cafe Waitress
Lee Na-ra
Shin Da-hye
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