Synopsis
Two detectives communicate through a walkie-talkie to solve a cold case. One detective exists in the present day, and the other detective exists 15 years in the past.
Original title シグナル 長期未解決事件捜査班
First air date Apr. 10, 2018
Last air date Jun. 12, 2018
Seasons 1
Episodes 10
Average Duration 54 minutes
