Signal: Choki Mikaiketsu Jiken Sosahan SP

Transmissions through the mysterious walkie-talkie begin once more as two detectives - one from the present, and the other 20 years in the past - work together to solve another cold case and... Read allTransmissions through the mysterious walkie-talkie begin once more as two detectives - one from the present, and the other 20 years in the past - work together to solve another cold case and clear the past detective's name. This is adapted from the 4th case of 2016 tvN drama Sign... Read allTransmissions through the mysterious walkie-talkie begin once more as two detectives - one from the present, and the other 20 years in the past - work together to solve another cold case and clear the past detective's name. This is adapted from the 4th case of 2016 tvN drama Signal.