Some detectives chase leads. Lee Sang Yi’s character chases an obsession. Ahead of the July 31 premiere of MBC’s A Bona Fide Killer, the actor opened up about stepping into the shoes of a relentless cop whose entire life revolves around catching one elusive assassin — who just happens to be his own city’s most ordinary-looking working mom.
Table of Contents
A Bona Fide Killer: Overview
| Detail | Information |
|---|---|
| Drama | A Bona Fide Killer |
| Network | MBC |
| Premiere | July 31, 9:50 PM KST |
| Lee Sang Yi’s Role | Lt. Lee Dong Jin, Violent Crimes detective |
| Co-star | Kong Hyo Jin as Yu Bo Na / “Kingfisher” |
| Genre | Action, pursuit, family, romance |
| Source Material | Original webtoon |
Who Is Lee Dong Jin?
Lee Sang Yi plays Lieutenant Lee Dong Jin of Nambu Police Station’s Violent Crimes Unit 2 — a top-performing detective known for his high case-clearance rate and unwavering belief in delivering justice through the law. His singular focus: catching the legendary sniper known only as Kingfisher, secretly the alter ego of Kong Hyo Jin’s character, an unassuming sales team manager balancing a lethal double life.
To describe Dong Jin, Lee Sang Yi picked three words — black wolf, mole, and tenacity — pointing to the character’s dark wardrobe, wolf-like focus when closing in on a target, and mole-like persistence in digging through cases. He also noted a personal parallel, saying his own drive to see a goal through to the end mirrors Dong Jin’s single-minded pursuit of Kingfisher.
Why He Took the Role
Since the drama is based on an existing webtoon, Lee Sang Yi went into the project already knowing the twist — yet found the suspense compelling enough to sign on anyway. He also described consciously dialing back his usual playful energy to match Dong Jin’s serious, composed demeanor, a contrast the actor said required deliberate effort throughout filming.
A Bona Fide Killer blends action, family drama, and romance, marking Kong Hyo Jin’s first MBC drama role in 15 years — a notable return for the network’s drama lineup.
For more K-drama previews and cast interviews, check out TechnoSports.
FAQs
Q1: When does A Bona Fide Killer premiere? The drama premieres on July 31 at 9:50 PM KST on MBC.
Q2: Who does Lee Sang Yi play in A Bona Fide Killer? He plays Lieutenant Lee Dong Jin, a determined detective hunting the sniper known as Kingfisher.
