| Kill It | |
|---|---|
Promotional poster | |
| Hangul | 킬잇 |
| RR | Kirit |
| MR | K'irit |
| Genre | Thriller |
| Created by | Studio Dragon |
| Written by |
|
| Directed by |
|
| Starring | |
| Music by | Kim Joon-seok (Movie Closer) |
| Country of origin | South Korea |
| Original language | Korean |
| No. of episodes | 12 |
| Production | |
| Camera setup | Single-camera |
| Running time | 60 minutes |
| Production company | Crave Works |
| Original release | |
| Network | OCN |
| Release | March 23 (2019-03-23) – April 28, 2019 (2019-04-28) |
Kill It (Korean: 킬잇) is a 2019 South Korean television drama starring Jang Ki-yong and Nana. It was broadcast on the Orion Cinema Network (OCN) from 23 March to 28 April 2019. The series follows the intertwined fates of a man abandoned by the devil and a woman raised by the devil, as well as the client who seeks vengeance against them. Blending elements of action, mystery and melodrama, *Kill It* explores the fatal encounter between a man destined to die and a woman determined to capture him.
By day, Kim Soo-hyun (Jang Ki-yong) is a gifted veterinarian, calm and compassionate, devoted to saving the lives of stray and injured animals. Yet behind this gentle persona lies a chilling truth — he is one of the most efficient assassins in the world. Operating under a veil of secrecy, Soo-hyun has built a fearsome reputation among global criminal networks as a master of precision, elusive as a shadow and silent as death itself. His life is governed by cold logic and anonymity, until fate draws him towards an encounter that will unravel everything he thought he knew about himself.
Do Hyun-jin (Nana), a brilliant and determined detective, is known for her sharp instincts and unflinching pursuit of justice. Beneath her controlled, stoic exterior lies a deeply compassionate soul, haunted by the memory of a personal loss that still drives her. When a series of mysterious murders shakes Seoul, Hyun-jin's investigation leads her straight to Soo-hyun — a man whose calm eyes conceal a violent secret. Convinced that he is the killer, she begins a relentless pursuit, only to uncover a truth far more complex and devastating than she ever anticipated.
As Hyun-jin delves deeper, long-buried connections emerge between the two. Years ago, Soo-hyun was rescued and raised by Pavel, a European contract killer who had originally been sent to murder him on his father's orders. Stricken by guilt, Pavel spared the boy and raised him as his adopted son — training him in the art of assassination but also urging him to live freely, unbound by violence. When Pavel falls ill and embarks on one last job, his failure leads to capture and torture by a mafia syndicate. Soo-hyun's rescue mission ends in bloodshed, leaving Pavel mortally wounded and a vengeful enemy, Karimov, in his wake.
Now, with his mentor gone and his past resurfacing, Soo-hyun stands at the crossroads of fate. Bound to Hyun-jin by tragedy and truth, the two must confront secrets that tie their lives — and the lives of those they have lost — together in ways neither could have foreseen. In a world where every kill leaves a scar and every truth hides another lie, love and justice collide in a deadly game of redemption.

Kill It was supposed to be produced by BaramiBunda Inc., but the company's CEO Cho Jung-ho was accused of embezzlement. Studio Dragon and Crave Works later assumed production duties.[8]
| Kill It OST | |
|---|---|
| Soundtrack album by Various artists | |
| Recorded | 2019 |
| Genre | Soundtrack |
| Language | |
| Label |
|
| No. | Title | Lyrics | Music | Artist | Length |
|---|---|---|---|---|---|
| 1. | "Forever Love" | Han Joon | Lee Yoo-jin | Min Kyung-hoon (Buzz) | 3:46 |
| 2. | "Forever Love" (Inst.) | Lee Yoo-jin | 3:46 | ||
| Total length: | 7:32 | ||||
| No. | Title | Lyrics | Music | Artist | Length |
|---|---|---|---|---|---|
| 1. | "My Everything" | Han Joon | Lee Yoo-jin | Han Seung-hee | 3:32 |
| 2. | "My Everything" (Inst.) | Lee Yoo-jin | 3:32 | ||
| Total length: | 7:04 | ||||
| No. | Title | Lyrics | Music | Artist | Length |
|---|---|---|---|---|---|
| 1. | "Take Out My Heart" | Han Joon | Lee Yoo-jin | Jung Dong-ha | 3:12 |
| 2. | "Take Out My Heart" (Inst.) | Lee Yoo-jin | 3:12 | ||
| Total length: | 6:24 | ||||
| No. | Title | Lyrics | Music | Artist | Length |
|---|---|---|---|---|---|
| 1. | "A Secret That Can't Be Told" (말할 수 없는 비밀) | Jin Min-ho, Kim Sung-yoon | Jin Min-ho | Jang Hee-young | 03:38 |
| 2. | "A Secret That Can't Be Told (Inst.)" (말할 수 없는 비밀) | Jin Min-ho | 03:38 | ||
| Total length: | 07:16 | ||||
| No. | Title | Lyrics | Music | Artist | Length |
|---|---|---|---|---|---|
| 1. | "You,Like,Me" | Han Gil, Han Joon | Han Gil, D&T | Kim Bo-kyung | 03:24 |
| 2. | "You,Like,Me (Inst.)" | Han Gil, D&T | 03:24 | ||
| Total length: | 06:48 | ||||
| No. | Title | Lyrics | Music | Artist | Length |
|---|---|---|---|---|---|
| 1. | "Just Stay" | Han Joon | Han Gil | ALi | 03:18 |
| 2. | "Just Stay (Inst.)" | Han Gil | 03:18 | ||
| Total length: | 06:36 | ||||

| Season | Episode number | Average | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |||
| 1 | TBD | 628 | 315 | 628 | TBD | 580 | TBD | 376 | TBD | 571 | TBD | 601 | TBD | |
| Ep. | Original broadcast date | Average audience share (AGB Nielsen)[10] | |||
|---|---|---|---|---|---|
| Nationwide | Seoul | ||||
| 1 | March 23, 2019 | 1.114% | N/a | ||
| 2 | March 24, 2019 | 2.321% | 2.819% | ||
| 3 | March 30, 2019 | 1.311% | 1.460% | ||
| 4 | March 31, 2019 | 2.757% | 3.420% | ||
| 5 | April 6, 2019 | 1.085% | 1.742% | ||
| 6 | April 7, 2019 | 2.216% | 2.535% | ||
| 7 | April 13, 2019 | 0.926% | N/a | ||
| 8 | April 14, 2019 | 1.772% | 2.338% | ||
| 9 | April 20, 2019 | 1.021% | N/a | ||
| 10 | April 21, 2019 | 2.298% | 2.860% | ||
| 11 | April 27, 2019 | 1.359% | N/a | ||
| 12 | April 28, 2019 | 2.546% | 2.896% | ||
| Average | 1.727% | —[a] | |||
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