Actress Gong Hyo-jin has showcased an intense transformation in her small-screen comeback after 15 years with 'A Married Woman Killer,' sweeping 1st place in both viewership ratings and buzz.

The MBC Friday-Saturday drama 'A Married Woman Killer' (planned by Kwon Sung-chang, written by Kim Eun-hee, directed by Yoon Jong-ho and Kim Ji-hoon), which premiered on the 31st of last month at 9:50 p.m., marked a successful start. The work claimed an overwhelming 1st place across various metrics, including 1st in the TV category for the 5th week of July, 1st in the integrated OTT ranking, 1st in viewership ratings for its time slot among Friday-Saturday dramas, and 1st overall on Saturday in the 20-54 demographic. In particular, the tense standoff scene between Gong Hyo-jin and Oh Hyun-nam recorded a peak moment rating of 10.6%, drawing high expectations.

Returning to MBC dramas for the first time in 15 years since 'The Greatest Love' in 2011, Gong Hyo-jin takes on the role of 'Yu Bo-na' in this work, a legendary sniper who navigates between being the head of the Sales Team 3 at Durumi Electronics and an ordinary working mom. Showing a relatable side early on as she naturally takes care of her husband and child in her daily routine, she reveals sharp judgment and cold-blooded killer instincts in crisis situations, displaying a 180-degree different charm.

Her hidden everyday abilities are depicted with wit, from staring down a recklessly driven vehicle to catching a falling cup with one hand and subduing a sexual assailant with groceries. In particular, the scene where she aims a sniper rifle on a cathedral rooftop, eliminates a criminal in an instant, and calmly says, 'Meeting adjourned,' combined Gong Hyo-jin's signature restrained acting and charisma, leaving a striking impression.

Her realistic struggles as a working mom trying to find a balance between work and parenting are also delicately portrayed. The line, 'I'll do it during the day. I have to pick up my child,' symbolically reflects Yu Bo-na's reality of having to protect both her family and her job.

The tension of the drama reached its peak in the second episode. When Oh Hyun-nam (Ha Yul-ri) threatened that she had fed her husband Kwon Tae-sung (Jung Jun-won) the poison 'Mist S,' Yu Bo-na chose a head-on confrontation, drinking the poison herself without hesitation. Her multifaceted acting, which alternated between the desperation to protect her beloved family and the cold-bloodedness of a killer, drew viewers deep into the story.

After the broadcast, viewers showed explosive reactions with overwhelmingly positive reviews, saying, 'You can always trust Gong Hyo-jin's acting,' and 'Casting Gong Hyo-jin was a stroke of genius.'

Previously, at the production presentation, Gong Hyo-jin shared her thoughts, saying, 'I can't believe it's a return after 15 years,' and 'The revenge drama is riding a good wave.' She also made an interesting pledge on the recently aired variety show 'Hangout with Yoo,' promising to reveal her car and house if the ratings exceed 15%.

Meanwhile, the highly anticipated third episode of 'A Married Woman Killer,' featuring Gong Hyo-jin's performance, is scheduled to air on the 7th at 9:50 p.m.