It's 3 minutes for hearers, but a life for the callers. A crime thriller chasing even the slightest sounds to rescue people's lives calling for urgent help.
Lee Ha-na
Kang Kwon-ju
58 episodes
Son Eun-seo
Park Eun-Soo
58 episodes
Kim Joong-ki
Park Joong-Ki
42 episodes
Song Boo-gun
Goo Gwang-Soo
42 episodes
Baek Sung-hyun
Shim Dae-Sik
30 episodes
Lee Jin-uk
Do Kang-woo
28 episodes
Kim Woo-seok
Jin Seo-Yool
28 episodes
Kim Ki-nam
Yang Choon-Byung
28 episodes
Jang Hyuk
Mu Jin-hyuk
16 episodes
Choi Seung-yoon
Oh Jin-sik
16 episodes
