Main •
Lee Min-ki as Jo Tae-sik, a once enthusiastic detective who now lives a completely different life and has requested appointment at a rural police station.
Supporting •
Lee Joon-hyuk as Jung Sang-hoon, Seo-hee's husband who disappeared mysteriously after her father's death. •
On Joo-wan as Jin Young-min, the general manager of JQ Industries. •
Lee Jun-hyeok as Yoo Dae-yong, head of the metropolitan investigation team. •
Kim Jong-soo •
Yoon Bok-in as Kim Seo-hee's mother •
Seo Hyun-woo as In Dong-gu, a character who is willing to go to any lengths for Chairman Jeong Young-moon. •
Kim Yong-ji as Choi Soo-yun •
Ye Soo-jung as Coroner •
Song Young-chang as Hong Min-guk • Jo Ryun •
Kim Hak-sun • Hong In ==Production==