The Reason We're Not Detectives S01 E02

Lee Seung-gi (as Eun Dae-gu / Kim Ji-yong) Cha Seung-won (as Seo Pan-seok) Go Ara (as Eo Soo-sun) Ahn Jae-hyun (as Park Tae-il) Oh Yoon-ah (as Kim Sa-kyung) Seo Yi-sook (as Kang Seok-soon) Lee Yi-kyung (as Shin Ki-jae) Im Won-hee (as Cha Tae-ho) Park Jeong-min (as Ji Gook) Moon Hee-kyung (as Yoo Ae-yeon) Lee Ki-young (as Shin Ji-il) Song Young-gyu (as Jo Hyeong-Chul) Son Hee-soon (as Sin Yoon-jeong's mother) Kim Yun-tae (as Prosecutor)