Lee Yoo Mi's task to go undercover gets intense as "Strong Girl Namsoon" delivers a surprising twist in episode 10.

The JTBC spin-off is gaining more attention as the rom-com series is in its second half. Viewers get to see more characters and thrilling stories as Kang Nam Soon, Hwang Geum Joo, and Kang Hee Shik dig deep into Ryu Shi Oh's drug trade.

Headlined by Lee Yoo Mi, Kim Jung Eun, Kim Hae Sook, Ong Seung Wu, and more, "Strong Girl Namsoon" airs every Saturday and Sunday via JTBC and Netflix.

'Strong Girl Namsoon' Viewership

The rating race is getting tougher as new series premiere every week.

As for "Strong Girl Namsoon" episode 10, there's a slight boost in rating after garnering an average nationwide rating of 8.7 percent.

In addition, the JTBC series remained at the top spot in its time slot across all cable channels.

'Strong Girl Namsoon' Episode 10

The episode continues with Hwang Geum Joo's shocking car accident, which was planned by Ryu Shi Oh.

He often invites her to dinner and talks about random things in life. Here, she found out that Shi Oh was an orphan and lived in Russia when he was adopted.

This is where it sink in about Geum Joo's information that a group of Russian mafia is adopting orphans in South Korea to groom them to become part of their syndicate.

On the other hand, Geum Joo found out about a shocking incident involving her son, Kang Nam In.

Getting worried about his son's status, Kang Bong Go sought the help of Hee Shik to find out about the weight loss pill that Nam In took that made his health miserable.

He found out that it was the type of drug that they'd been searching for.

One of the side effects is weight loss and getting obsessed with drinking water.

Hwang Geum Joo couldn't believe that her son would fall victim to Ryu Shi Oh's evil act.

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Written by Geca Wills