Yoo Bo-na’s double life just keeps getting messier. After episodes 3 and 4 pulled her deeper into an organ trafficking case, the next chapter promises a new mystery straight out of Russia — and it’s landing right on schedule.
A Bona Fide Killer: Overview
| Detail | Information |
|---|---|
| Show | A Bona Fide Killer |
| Network | MBC TV |
| Episodes 5-6 Release | August 14 & 15, 2026 |
| Air Time | 9:50 PM KST |
| Total Episodes | 14 |
| Series Finale | September 12, 2026 |
| Lead Cast | Gong Hyo-jin, Jung Joon-won, Lee Sang-yi |
What Happened in Episodes 3-4
Episode 3 opens with a tense reunion between Bo-na and Hyun-nam, who admits Bo-na changed her life and remains her role model, though she’s disappointed to see her former idol settle into married life. Bo-na explains that while she once saved Hyun-nam, her husband Tae-sung has since saved her, and she’s genuinely content with her family life.
Elsewhere, police uncover several bodies in the mountains with their organs removed, prompting Lee Dong-jin to investigate an organ trafficking operation that ties back to a company retreat Bo-na’s team attends.

What to Expect from Episodes 5-6
The upcoming episodes are expected to introduce a fresh case while escalating turmoil in Bo-na’s personal life. Bo-na is shown telling her team about a mysterious doll and an accompanying message she’s received from Russia, leaving everyone on edge. Meanwhile, a descendant of a royal family becomes the team’s newest target after becoming entangled in a serious crime.
About the Show
A Bona Fide Killer follows Yoo Bo-na, an ordinary office worker, wife, and mother who secretly lives as the legendary vigilante assassin Kingfisher. Adapted from a Kakao Webtoon and written by Kim Eun-hee, the series stars Gong Hyo-jin, Jung Joon-won, Lee Sang-yi, and Sung Dong-il, and airs every Friday and Saturday through its 14-episode run.
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