How many episodes does A Bona Fide Killer have?

Fourteen. It aired on MBC from 31 July to 12 September 2026, on Fridays and Saturdays at 21:50 KST.

Is A Bona Fide Killer based on a webtoon?

Yes, the Kakao Webtoon A Bona Fide Killer (유부녀 킬러) by Yoon and Gum.

Who is Kingfisher in A Bona Fide Killer?

Kingfisher is the code name of Yoo Bo-na, played by Gong Hyo-jin: a working mother and electronics-company sales manager who is secretly a sniper targeting criminals the law failed to punish.

What ratings did A Bona Fide Killer get?

It grew across its run, from 7.4% nationwide for the premiere to a series-high 10.7% for the finale, and averaged 9.193% (Nielsen Korea).

★ 8.4completed

A Bona Fide Killer

유부녀 킬러

Year2026Episodes14NetworkMBC

“Mr. & Mrs. Smith meets Kill Boksoon”

A seemingly ordinary working mother secretly lives as a legendary sniper who delivers justice where the law fails. After returning from a three-year hiatus, she must balance protecting her family with eliminating dangerous criminals, all while a determined journalist and a relentless detective close in on her hidden identity.

Crime Workplace Hidden Identity

Gong Hyo-jin

as Yoo Bo-na · LEAD

Gong Hyo-jin

Yoo Bo-na

Jung Jun-won

as Kwon Tae-sung · LEAD

Jung Jun-won

Kwon Tae-sung

Lee Sang-yi

as Lee Dong-jin · SUPPORTING

Lee Sang-yi

Lee Dong-jin

Sung Dong-il

as Kim Bong-pal · SUPPORTING

Sung Dong-il

Kim Bong-pal

Moo Jin-sung

as Gi Yeong-do · SUPPORTING

Moo Jin-sung

Gi Yeong-do

Lee Eun-saem

as Kwon Se-ah · SUPPORTING

Lee Eun-saem

Kwon Se-ah

Kim Nam-hee

as Bong Tae-min · SUPPORTING

Kim Nam-hee

Bong Tae-min

Ha Yul-Ri

as Oh Hyun-nam · SUPPORTING

Ha Yul-Ri

Oh Hyun-nam

Streaming

Where to watch

VikiKocowa

Availability varies by region · Data by JustWatch via TMDB

Quick verdict

Should you watch?

Story

9.1

Acting

9.2

OST

8.3

Pacing

8.3

8.5+

7–8.4

✓Kill Boksoon and Mr. & Mrs. Smith fans, Gong Hyo-jin fans, viewers who like assassin action softened by a warm family story

✗A slow first four episodes will lose you, or you need every assassin's backstory explained

Story

What is it really about

Back from three years of childcare leave, a sales manager returns to her other job: sniping the criminals the courts let walk. Her husband is a reporter chasing the vigilante, and his best friend is the detective hunting her.

Action-comedyDouble lifeWarm family chaosSlick

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