Hua Long, Su Mei, Bao Zhan and Professor Liang comprise the SIG (Special Investigation Group). This group deals with the extremely abnormal and twisted investigations of homicide cases that are difficult to crack. In the process of solving the cases, each member must face their own dangers, conspiracy and growth.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Episode 1 | 2016-07-27 | 25 min |
| Season 1 | Episode 2 | Episode 2 | 2016-07-27 | 25 min |
| Season 1 | Episode 3 | Episode 3 | 2016-08-03 | 25 min |
| Season 1 | Episode 4 | Episode 4 | 2016-08-03 | 25 min |
| Season 1 | Episode 5 | Episode 5 | 2016-08-10 | 25 min |
| Season 1 | Episode 6 | Episode 6 | 2016-08-10 | 25 min |
| Season 1 | Episode 7 | Episode 7 | 2016-08-17 | 25 min |
| Season 1 | Episode 8 | Episode 8 | 2016-08-17 | 25 min |
| Season 1 | Episode 9 | Episode 9 | 2016-08-24 | 25 min |
| Season 1 | Episode 10 | Episode 10 | 2016-08-24 | 25 min |
| Season 1 | Episode 11 | Episode 11 | 2016-08-31 | 25 min |
| Season 1 | Episode 12 | Episode 12 | 2016-08-31 | 25 min |
| Season 1 | Episode 13 | Episode 13 | 2016-09-07 | 25 min |
| Season 1 | Episode 14 | Episode 14 | 2016-09-07 | 25 min |
| Season 1 | Episode 15 | Episode 15 | 2016-09-14 | 25 min |
| Season 1 | Episode 16 | Episode 16 | 2016-09-14 | 25 min |
| Season 1 | Episode 17 | Episode 17 | 2016-09-21 | 25 min |
| Season 1 | Episode 18 | Episode 18 | 2016-09-21 | 25 min |
| Season 1 | Episode 19 | Episode 19 | 2016-09-28 | 25 min |
| Season 1 | Episode 20 | Episode 20 | 2016-09-28 | 25 min |
| Season 1 | Episode 21 | Episode 21 | 2016-10-01 | 25 min |
| Directing | Lee Dong-Hoon | Director |
| Production | Eric Tsang-Chi Wai | Supervising Producer |
