- Han Suk-kyu
- Â Jang Tae-soo 10 episodes, 2024
- Chae Won-Bin
- Â Jang Ha-bin 10 episodes, 2024
- Han Ye-ri
- Â Lee Eo-jin 10 episodes, 2024
- Oh Yeon-su
- Â Yun Ji-soo 10 episodes, 2024
- Roh Jae-won
- Â Koo Dae-hong (Inspector) 10 episodes, 2024
- Yoon Kyung-ho
- Â Oh Jeong-hwan (Head of homicide squad) 10 episodes, 2024
- Lee Shin-Ki
- Â Kim Yong-soo (Police officer) 10 episodes, 2024
- Lee Kyo-Yeob
- Â Jo Kyung-bin (Detective) 10 episodes, 2024
- Yu Eui-tae
- Â Park Jeon-tae (High school teacher) 10 episodes, 2024
- Kim Jeong-jin
- Â Choi Yeong-min 10 episodes, 2024
- Choi Yu-hwa
- Â Kim Sung-hui 10 episodes, 2024
- Han Soo-a
- Â Song Min-ah 10 episodes, 2024
- Yoon Jae-chan
- Â Go Se-ho 10 episodes, 2024
- Na Do-yool
- Â Park Jae Hun [Police violent crimes team 1] 1 episode, 2024
- Lee Yang-hee
- Â Hwang Young Su [Forensics investigation team] 1 episode, 2024
- Park Kyung-Geun
- Â Lee Seok Mun 1 episode, 2024
- Park Eun-woo
- Â Park Ji Yeon 1 episode, 2024
- Son Sook
- Â Ha Bins grandmother 1 episode, 2024
- Moon Byung-joo
- Â Police officer 1 episode, 2024
- Lee Ye-Joo
- Â Jang Ha Bin [Child] 1 episode, 2024
