Starring
Seo In-gukJang Na-raPark Bo-gumChoi Won-youngKim Jae-youngSon Seung-Won
Ratings per Episode
Votes per Episode
Hello Monster Episode Ratings Heatmap
| Avg | E1 | E2 | E3 | E4 | E5 | E6 | E7 | E8 | E9 | E10 | E11 | E12 | E13 | E14 | E15 | E16 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| S1 | 8.7 | 8.4 | 8.5 | 8.8 | 8.4 | 8.4 | 8.4 | 8.7 | 9.1 | 8.7 | 8.8 | 8.6 | 8.8 | 8.9 | 8.8 | 9.1 | 8.6 |
Download Infographic
About
This drama is a romantic thriller that centers around a criminal profiler, Lee Hyun who previously work as a consultant at the police department in New York. After he returns to south Korea, he’s in charge of a special criminal investigation team. Due to his special insight, he can analyze the crime scene and the suspect at one glance. He works together with an elite detective, Cha Ji An to solve the crimes and they develop a romantic relationship.
All Seasons
▼

Season 12015
8.73411618h 40m
| Ep | Title | Rating | Yours | Votes | Runtime | |
|---|---|---|---|---|---|---|
| ▶ | 1 | Every Child's Story Begins with His Parents | 8.4 | 28 | 70 min | |
| ▶ | 2 | Hello, Monster | 8.5 | 26 | 70 min | |
| ▶ | 3 | Don't Commit Murder, But... | 8.8 | 23 | 70 min | |
| ▶ | 4 | Suspect, Lee Hyun | 8.4 | 22 | 70 min | |
| ▶ | 5 | Borne Back Ceaselessly into the Past | 8.4 | 21 | 70 min | |
| ▶ | 6 | Murderer's Blood | 8.4 | 20 | 70 min | |
| ▶ | 7 | Let's Be Partners? | 8.7 | 20 | 70 min | |
| ▶ | 8 | Remember Me | 9.1 | 21 | 70 min | |
| ▶ | 9 | Stalkers | 8.7 | 20 | 70 min | |
| ▶ | 10 | Find Me | 8.8 | 19 | 70 min | |
| ▶ | 11 | Birth of a Monster | 8.6 | 19 | 70 min | |
| ▶ | 12 | If I Had to Kill Somebody | 8.8 | 21 | 70 min | |
| ▶ | 13 | What Choice Would You Make? | 8.9 | 19 | 70 min | |
| ▶ | 14 | Lee Joon Young's Room | 8.8 | 19 | 70 min | |
| ▶ | 15 | Is It Possible to Have a Happy Ending? | 9.1 | 21 | 70 min | |
| ▶ | 16 | Remember You | 8.6 | 22 | 70 min |
Full Cast & Crew
Cast
Seo In-guk Lee Hyun
Jang Na-ra Cha Ji-an
Park Bo-gum Jung Sun-ho
Choi Won-young Lee Joon-ho
Kim Jae-young Min Seung-joo
Son Seung-Won Choi Eun-bok
Lee Cheon-hee Kang Eun-hyuk
Min Sung-wuk Son Myeong-woo
Yoo Hyeong-kwan Yang Jin-seok
Choi Deok-moon Na Bong-sung