![](https://image.tmdb.org/t/p/w342/4MzvA9GpzztBTFWw5nHENj7hU9a.jpg)
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Detectives from the present and a detective from the past communicate via walkie-talkie to solve a long-time unsolved case.
First Air Date : Jan 22, 2016
Last Air date : Mar 12, 2016
Episode : 16 Episode
Season : 1 Season
Runtime: 48 minutes
Studio: tvN
Country: South Korea