
The series ran 4 seasons across 58 episodes and has ended. Streaming on Tubi.
Featured in collections
Synopsis
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.
Ratings
| Source | Rating | Weight |
|---|---|---|
| IMDb | 7.6/10 | 71% |
| TMDB | 7.3/1078 votes | 29% |
| Balasaur Score | 75 | 100% |
Seasons
| 1 | Season 1 | 16 ep2017 |
| 2 | Generation of Disgust | 12 ep2018 |
| 3 | City of Accomplices | 16 ep2019 |
| 4 | Time of Judgment | 14 ep2021 |
Key crew
- Ma Jin-wonCreator, Writer
- Shin Yong HwiDirector
Cast
- Lee Ha-naKang Kwon-ju
- Song Seung-heonDerek Jo
- Son Eun-seoPark Eun-soo
- Kang Seung-yoonHan Woo-joo
- Kim Jung-kiPark Joong-ki
- Song Boo-gunGoo Gwang-soo
- Baek Sung-hyunShim Dae-sik
- Kim Jae-uckMo Tae-gu
- Han Jong-hoonChad Lee



























