Creator
Creator
Cast
Kang Kwon-ju
Derek Jo
Park Eun-Soo
Park Joong-Ki
Shim Dae-Sik
Goo Gwang-Soo
Han Woo-Joo
Nick Jackson
Video trailer
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. 
TMDb Rating 7.1 55 votes
First air date Jan. 14, 2017
Last air date Jul. 31, 2021
Seasons 4
Episodes 58
Average Duration 60 minutes
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