tvN’s new spy romance 100 Days of Deception opened to the highest premiere rating of any tvN Saturday-Sunday drama in 2026, then rose again the next night. Episode 1 averaged 5.3% nationwide on October 10, according to Nielsen Korea, and episode 2 reached 7.6% on October 11, first in its time slot among all cable channels.
Key Takeaways
- Episode 1 (October 10): 5.3% nationwide, the highest premiere of any tvN weekend drama in 2026, per Soompi citing Nielsen Korea.
- Episode 2 (October 11): 7.6% nationwide, first in its time slot across all cable channels.
- Kim You Jung and Park Jinyoung lead a 16-episode spy romance set in 1932 Gyeongseong, now Seoul.
- Episodes air Saturdays and Sundays at 9:10 p.m. KST on tvN and stream on Netflix for international viewers.
- The finale is listed for November 29.
How the Ratings Compare
| Episode | Air date | Nationwide rating | Note |
|---|---|---|---|
| 1 | October 10 | 5.3% | Highest premiere of any 2026 tvN weekend drama; most-watched cable show of any kind that Saturday |
| 2 | October 11 | 7.6% | First in its time slot across all cable channels |
Between the two nights the rating rose by 2.3 percentage points. Soompi did not publish Seoul-area figures for either episode, and its report on episode 2 did not state the episode 1 number, so the size of the gain comes from our own subtraction of the two reported figures.
For context on the Sunday competition, Soompi reported that KBS 2TV’s Love on the Menu was the most-watched show of October 11 at 16.3%. That drama airs on a terrestrial channel, so 100 Days of Deception is competing for the top of the cable ranking rather than the overall one.
What Is 100 Days of Deception About?
The story begins in Gyeongseong in 1932. Lee Ga-kyung is a pickpocket who wants to move to America. She is recruited by Gugukdan, an independence group, to work undercover as an interpreter trainee inside the Japanese Government-General of Joseon. She has 100 days to gather secret information and help with an assassination plan, and the mission is complicated by her relationship with a colonial government interpreter, according to The Week.
Cast and Crew
| Actor | Role |
|---|---|
| Kim You Jung | Lee Ga-kyung (also Geum Seo-hui) |
| Park Jinyoung (GOT7) | Kim Tae-woong (also Sato Hideo) |
| Kim Hyun Joo | Yoo So-ran, leader of the independence group |
| Lee Moo Saeng | Yoo Phillip |
| Jin Sun Kyu | Sato Shinichi |
The drama is directed by Yoo In-shik, whose credits include Extraordinary Attorney Woo and Dr. Romantic, and written by Ryu Bo-ri, who wrote Do You Like Brahms?, according to The Week. It is a special project marking tvN’s 20th anniversary.
Air Times for International Viewers
New episodes air on Saturdays and Sundays at 9:10 p.m. KST. These are the tvN broadcast times; Netflix release timing for international viewers may differ, and The Week did not list specific Netflix regions, so check your local Netflix listing.
| Region | Local broadcast time |
|---|---|
| Philippines, Malaysia, Singapore | 8:10 p.m. |
| Thailand, Vietnam, western Indonesia | 7:10 p.m. |
| Colombia, Peru | 7:10 a.m. |
| Mexico City | 6:10 a.m. |
| Brazil, Argentina | 9:10 a.m. |
| United States (Eastern) | 8:10 a.m. |
| United States (Pacific) | 5:10 a.m. |
Editor’s Take
Two episodes are too few to call a trend, but the direction matters: a premiere that sets a 2026 tvN weekend record followed by a higher second night is the pattern a new series wants. The next two weekends will show whether viewers who tuned in for the premiere are staying.
The setup also gives the story a built-in clock. A 100-day mission with an assassination plan at the end, and a leading pair on opposite sides of the colonial government, gives the writers a structure for 16 episodes. The creative team’s earlier work, including a director known for Extraordinary Attorney Woo, will shape expectations for the tone.
We did not find verified fan-reaction data for this series yet, so we have not included any. We will update this article if that changes.
Sources
- Soompi · 2026-10-11
- Soompi · 2026-10-12
- The Week · 2026-10-12
- What’s on Netflix · 2026-09-29
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