Signal
Signal Episode Ratings Heatmap
| Avg | E1 | E2 | E3 | E4 | E5 | E6 | E7 | E8 | E9 | E10 | E11 | E12 | E13 | E14 | E15 | E16 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S1 | 7.9 | 7.9 | 7.9 | 8.0 | 8.2 | 7.4 | 7.7 | 7.6 | 8.4 | 7.9 | 8.1 | 7.7 | 8.2 | 8.1 | 7.9 | 8.1 | 7.5 |
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About
"Cold cases solved across a decades-wide radio silence"
A present-day detective stumbles on an old walkie-talkie that somehow lets him talk to a cop working the same cases decades earlier. Together they start solving cold cases that were never closed, but every fix in the past risks changing the present in ways neither expects. It plays like a moody procedural crossed with a time-bending mystery: methodical, melancholy, and tightly plotted, with the case-of-the-week structure gradually building into one long thread about justice, guilt, and whether the past can actually be repaired.
the way each solved case ripples forward and complicates the present in unexpected ways.
you want fast, flashy thrills rather than a slow-burn, melancholy mystery.
Written by our AI editor to help you decide, spoiler-free by design.
All Seasons
| Ep | Title | Rating | Yours | Votes | Runtime | |
|---|---|---|---|---|---|---|
| ▶ | 1 | You're Doomed | 7.9 | 327 | 76 min | |
| ▶ | 2 | We Still Have a Chance | 7.9 | 271 | 65 min | |
| ▶ | 3 | We Can Prevent the Killings | 8.0 | 246 | — | |
| ▶ | 4 | We Found the Killer | 8.2 | 260 | 64 min | |
| ▶ | 5 | Changing the Past Alters the Present | 7.4 | 223 | 67 min | |
| ▶ | 6 | Catch Him by All Means | 7.7 | 216 | 70 min | |
| ▶ | 7 | We Must Dig Deeper | 7.6 | 204 | 66 min | |
| ▶ | 8 | How Are You Alive? | 8.4 | 220 | 74 min | |
| ▶ | 9 | Hongwon Dong Case | 7.9 | 205 | 73 min | |
| ▶ | 10 | Someone Has to Stop the Bad Guys | 8.1 | 203 | — | |
| ▶ | 11 | The One Last Case | 7.7 | 198 | 77 min | |
| ▶ | 12 | The Case Was Manipulated | 8.2 | 196 | 77 min | |
| ▶ | 13 | The Real Assailant | 8.1 | 199 | 73 min | |
| ▶ | 14 | Not Now, But Maybe In The Past | 7.9 | 189 | 74 min | |
| ▶ | 15 | Is It Really You? | 8.1 | 196 | 71 min | |
| ▶ | 16 | If You Don't Give Up | 7.5 | 221 | — |