A new K-drama is heading to Netflix, and this one blends espionage, romance, and a genuinely layered slice of history. 100 Days of Deception premieres on tvN in South Korea on October 10, 2026, with episodes also streaming on TVING domestically and globally on Netflix.
When and Where to Watch
100 Days of Deception airs on tvN every Saturday and Sunday at 21:10 KST, with the full 16-episode run rolling out weekly rather than dropping all at once. South Korean viewers can also catch it on TVING, while international audiences can stream it on Netflix. The series is also a special project marking tvN’s 20th anniversary, giving it extra weight within the network’s own programming history.
What’s the Story?
Set in 1932 Gyeongseong during the Japanese colonial period, the series follows Lee Ga-kyung, Gyeongseong’s most skilled pickpocket and con artist, who dreams of saving enough money to escape and start a new life abroad. Instead, she agrees to go undercover for 100 days as an interpreter trainee within the Japanese Government-General of Korea, working secretly on behalf of the independence movement.
During her mission, she crosses paths with Kim Tae-woong, also known as Sato Hideo, an elite interpreter and the adopted son of Director-General Sato Shinichi. As the two get pulled deeper into the colonial government’s web of secrets and hidden loyalties, their lives become entangled in espionage, danger, and the growing struggle for Korean independence.
100 Days of Deception Cast
Kim You-jung leads as Lee Ga-kyung, with Park Jin-young playing Kim Tae-woong. The main cast also includes Kim Hyun-joo as Yoo So-ran, a sniper for the independence group Gu-guk-dan, Lee Moo-saeng as Yoo Phillip, a Korean-American journalist tied to the resistance, and Jin Seon-kyu as Sato Shinichi, the ambitious Director-General who becomes a primary target for the independence movement.
The supporting cast is genuinely extensive too, featuring Seo Jeong-yeon, Oiko Kiko, Park Jung-yeon, Lee Seon, Kim In-kwon and Choi Deok-moon, among many others, reflecting the show’s wide-ranging ensemble spanning the Sato household, the National Salvation Corps, and the Gyodang-ri shantytown where Ga-kyung grew up.
Behind the Scenes
The series is written by Ryu Bo-ri and directed by Yoo In-shik and Kim Yoon-jin, marking the first collaboration between Yoo and Ryu. Yoo previously directed Dr. Romantic and Extraordinary Attorney Woo, while Ryu wrote Do You Like Brahms? and Trolley. It’s developed and produced by Studio Dragon alongside Nangman Crew.
Filming began in March 2026, with Nonsan Sunshine Land in South Chungcheong Province serving as a key backdrop, the same location previously used for the acclaimed series Mr. Sunshine, which should give fans a sense of the visual scale this production is aiming for.
Why This One’s Worth Watching
Historical K-dramas set during the Japanese colonial period have a strong track record of blending personal stakes with genuine political tension, and 100 Days of Deception looks like it’s leaning fully into that tradition. Combining a con artist’s survival instincts with an undercover spy mission gives Lee Ga-kyung’s character plenty of room for both tension and emotional depth, while the romance angle with Tae-woong adds another layer of complication to an already dangerous setup.
Should You Watch It?
With a strong lead pairing in Kim You-jung and Park Jin-young, a historically rich setting, and a genuinely sprawling supporting cast, 100 Days of Deception looks like one of this October’s more ambitious K-drama releases.
While you’re planning your October watchlist, there’s more worth checking out too. Below on Netflix brings Josh Hartnett face to face with a terrifying sea creature, and if horror is more your thing, Carrie’s new series adaptation on Prime Video is also worth watching this month.
100 Days of Deception premieres October 10, 2026, on Netflix.