
2012
20 Episodes
64 min
| Ep 1 | Ep 2 | Ep 3 | Ep 4 | Ep 5 | Ep 6 | Ep 7 | Ep 8 | Ep 9 | Ep 10 | Ep 11 | Ep 12 | Ep 13 | Ep 14 | Ep 15 | Ep 16 | Ep 17 | Ep 18 | Ep 19 | Ep 20 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S1 | 9.0 | 10.0 | 9.0 | 9.0 | 8.0 | 9.0 | 10.0 | 10.0 | 10.0 | 9.0 | 8.0 | 10.0 | 9.0 | 9.0 | 9.0 | 8.0 | 9.0 | 9.0 | 9.0 | 9.0 |

So Ji-sub
Kim Woo-hyun / Park Gi-young

Lee Yeon-hee
Yoo Kang-mi

Uhm Ki-joon
Jo Hyun-min

Kwak Do-won
Kwon Hyuk-joo

Song Ha-yoon
Choi Seung-yeon

Choi Daniel
Park Ki-young

Kwon Hae-hyo
Han Young-seok

Choi Jung-woo
Shin Kyung-soo

Jang Hyun-sung
Jeon Jae-wook

Jeong Dong-hwan
Kim Seok-joon

Lee Ki-young
Im Chi-hyun

Esom
Shin Hyo-jung

Lee Won-keun
Kwon Do-young

Chang Hang-jun
Cameo

Im Ji-gyu
Byeon Sang-woo

Jin Kyung
Oh Yeon-suk

Dong Bang-woo
Cho Gyeong-sin

Lee Jae-yoon
Cho Jae-min

Park Ji-il
Executive Moon

Kim Seung-o
Shin Hyo-jung's fan
The police procedural tackles crimes and clues in the cyber world, weaving a massive, twist-filled mystery of murders, identity switches, corruption and conspiracy.