96% on Rotten Tomatoes and a peak cable rating of 12.5% made this one of the highest-rated Korean cable dramas of its era, with critics consistently citing it as a benchmark of the crime-thriller genre.
Renewal: Season 1 ran 16 episodes on tvN in 2016 and concluded as a standalone story. A Season 2 was confirmed in March 2024 and was in production as of mid-2025. (Wikipedia)
Indian OTT platforms do not publish per-title streams. This tracks reception across the run, not viewership.
| Season | Released | BollyMeter | Critics | Audience | Verdict |
|---|---|---|---|---|---|
| Season 12016 · 16 eps | 22 January 2016 | 9.1 | 96% | 8.9/10 | MUST-WATCH |
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The opener establishes both timelines with confidence, introducing Park Hae-young as a profiler who discovers the walkie-talkie and makes first contact with detective Lee Jae-han in 1989. The cold-case setup - a kidnapping that devastated Park's family - gives the procedural an immediate personal stake.
The finale resolves the central mystery without betraying the show's insistence that changing the past is never clean. The last transmissions carry the full emotional weight of 16 hours of accumulated consequence.
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