Gong Hyo Jin made a strong return to television as MBC’s new Friday-Saturday drama A Bona Fide Killer opened with promising ratings.

According to Nielsen Korea, the first episode recorded an average nationwide rating of 7.4 percent and 6.8 percent in the Seoul metropolitan area. It ranked first among all programs airing in the same time slot.

The episode’s ratings rose to a peak of 9.4 percent during a scene in which Kwon Tae Sung, played by Jung Joon Won, learned through a news report that the legendary sniper known as Kingfisher had returned.

A Bona Fide Killer follows Yoo Bo Na, played by Gong Hyo Jin, as she balances her ordinary life as a wife, mother, and office worker with her hidden identity as a highly skilled sniper.

The premiere introduced her double life without revealing too many details. At home, Yoo Bo Na appears warm and caring toward her husband and daughter. However, several moments show that she has unusually fast reactions and precise skills.

After returning to work following three years of parental leave, she surprises her colleagues by placing her family responsibilities first. When asked to attend a client meeting, she firmly replies, “Let’s do it during the day. I have to pick up my child.”

The meaning of the “client meeting” later takes an unexpected turn as Yoo Bo Na quietly returns to her secret work. She announces, “The client meeting will now begin,” before completing her assignment.

The episode also introduces a mystery connected to her husband, who is investigating a serious criminal case. As reports about Kingfisher’s return begin spreading, he starts to question what may be happening around him.

A meaningful conversation about love and secrets also offers a brief look into Yoo Bo Na’s past. When told that a flower can represent both revealing secrets and true love, she responds, “Sometimes people have secrets because they love someone too much.”

The premiere ended with Yoo Bo Na receiving a warning connected to both her hidden identity and her family, raising questions about how long she can protect her double life.