Two detectives communicate through a walkie-talkie to solve cold cases. One detective exists in the present day and the other detective exists 15 years in the past.






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Series cast summary:
Kentarô Sakaguchi ...  Kento Saegusa 10 episodes, 2018
Michiko Kichise ...  Misaki Sakurai 10 episodes, 2018
Kazuki Kitamura ...  Takeshi Ooyama 10 episodes, 2018
Kaede Aono ...  Rika Anzai 10 episodes, 2018
Tetsuhiro Ikeda Tetsuhiro Ikeda ...  Shinya Kojima 10 episodes, 2018
Fûju Kamio Fûju Kamio ...  Ryota Kato 10 episodes, 2018
Yûichi Kimura Yûichi Kimura ...  Tsutomu Yamada 10 episodes, 2018
Masahiro Kômoto Masahiro Kômoto ...  Kazuo Iwata 10 episodes, 2018
Hajime Okayama Hajime Okayama ...  Yuji Ito 10 episodes, 2018
Atsuro Watabe Atsuro Watabe ...  Shinnosuke Nakamoto 10 episodes, 2018


Kento is a policeman, who had learned the art of criminal profiling on his own. After many painful and heartbreaking past memories such as the murder incident of a young girl who he was related to during his childhood years, and his brother's suicide, he has completely lost his trust on the police. With his calm decision making ability, detailed observation skills and his expert knowledge on criminal profiling, he embarks on a new challenge as he tries to uncover the truth which lies behind his brother's death. After secretly witnessing the female murderer who had kidnapped his childhood friend 15 years ago, Kento contacted the police about this, however his information had continuously been mistreated and uncared for by the police. The case itself remains unresolved as it nears the end of its period of investigation. One day, he hears a voice from a reciever which had been disposed. The voice turns out to be of another detective who had also been investigating the same incident as ...

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Release Date:

10 April 2018 (Japan) See more »

Also Known As:

Signal: Long-Term Unsolved Case Investigation Team See more »

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Horipro See more »
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