Through a mysterious Motorola phone, two detectives - one from the present, and the other from 15 years in the past - begin communicating and working together to solve cold cases. This is the Chinese adaptation of 2016 tvN drama Signal.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2019-10-23 | 34 min |
| Season 1 | Episode 2 | Episode 2 | 2019-10-23 | 34 min |
| Season 1 | Episode 3 | Episode 3 | 2019-10-24 | 34 min |
| Season 1 | Episode 4 | Episode 4 | 2019-10-24 | 34 min |
| Season 1 | Episode 5 | Episode 5 | 2019-10-25 | 34 min |
| Season 1 | Episode 6 | Episode 6 | 2019-10-25 | 34 min |
| Season 1 | Episode 7 | Episode 7 | 2019-10-30 | 34 min |
| Season 1 | Episode 8 | Episode 8 | 2019-10-30 | 34 min |
| Season 1 | Episode 9 | Episode 9 | 2019-10-31 | 34 min |
| Season 1 | Episode 10 | Episode 10 | 2019-10-31 | 34 min |
| Season 1 | Episode 11 | Episode 11 | 2019-11-01 | 34 min |
| Season 1 | Episode 12 | Episode 12 | 2019-11-01 | 34 min |
| Season 1 | Episode 13 | Episode 13 | 2019-11-06 | 34 min |
| Season 1 | Episode 14 | Episode 14 | 2019-11-06 | 34 min |
| Season 1 | Episode 15 | Episode 15 | 2019-11-07 | 34 min |
| Season 1 | Episode 16 | Episode 16 | 2019-11-07 | 34 min |
| Season 1 | Episode 17 | Episode 17 | 2019-11-08 | 34 min |
| Season 1 | Episode 18 | Episode 18 | 2019-11-08 | 34 min |
| Season 1 | Episode 19 | Episode 19 | 2019-11-13 | 34 min |
| Season 1 | Episode 20 | Episode 20 | 2019-11-13 | 34 min |
| Season 1 | Episode 21 | Episode 21 | 2019-11-14 | 34 min |
| Season 1 | Episode 22 | Episode 22 | 2019-11-14 | 34 min |
| Season 1 | Episode 23 | Episode 23 | 2019-11-15 | 34 min |
| Season 1 | Episode 24 | Episode 24 | 2019-11-15 | 34 min |
| Season 1 | Episode 25 | Episode 25 | 2019-11-20 | 34 min |
| Season 1 | Episode 26 | Episode 26 | 2019-11-20 | 34 min |
| Season 1 | Episode 27 | Episode 27 | 2019-11-21 | 34 min |
| Season 1 | Episode 28 | Episode 28 | 2019-11-21 | 34 min |
| Season 1 | Episode 29 | Episode 29 | 2019-11-22 | 34 min |
| Season 1 | Episode 30 | Episode 30 | 2019-11-22 | 34 min |
| Season 1 | Episode 31 | Episode 31 | 2019-11-27 | 34 min |
| Season 1 | Episode 32 | Episode 32 | 2019-11-27 | 34 min |
| Directing | Han Zeng Guang | Director |
