A twenty first century policeman and criminal profiler called Park Hae Young played by Lee Je-Hoon finds a walkie talkie at the police station which enables him to communicate with Detective Jae-Han (Cho Jin Woong) who is from the eighties. The veteran detective disappeared and together they begin to investigate various crimes but changing history can have serious consequences. The cold cases that are investigated are loosely based on actual crimes which does add a disturbing element the series. It is well acted and has an interesting plot which holds your attention and the timeline does not become too complicated.
Review of Signal
