Walking on Thin Ice () is a South Korean crime thriller television series, starring Lee Young-ae, Kim Young-kwang and Park Yong-woo. It aired on KBS2 from September 20, to October 26, 2025, every Saturdays and Sundays at 21:20 (KST). It is also available for streaming on Coupang Play, Wavve, Viki, and Kocowa in selected territories.
Synopsis The series revolves around an ordinary housewife named Kang Eun-soo, who turns to crime by selling hundreds of billions of won worth of drugs, which she stumbles upon while trying to pay for the treatment of her terminally ill husband.
Cast and characters Main Lee Young-ae as Kang Eun-soo An ordinary single mother. Kim Young-kwang as Lee Kyung A teacher with a mysterious identity. Park Yong-woo as Jang Tae-gu A detective who pursues Eun-soo.
Supporting
People around Eun-soo Bae Soo-bin as Park Do-jin Eun-soo's husband. Diagnosed with pancreatic cancer, he has a warm and caring personality. Kim Si-a as Park Soo-ah Eun-soo's daughter, an average student. She is good at drawing and has a crush on her art teacher Lee Kyung. Oh Yeon-ah as Baek Yeo-ju Eun-soo's only friend and a contract employee at Happiness Bank. Unlike Eun-soo, she has become a full-time employee. Jo Yeon-hee as Yang Mi-yeon A law professor who strives for perfection. She is concerned with education and academic background, and often says hurtful things to others without any ill intent. as Yoon Jin-hee Soo-ah's best friend and a member of the same art club. Lee Joo-yeon as Choi Yu-jeong Soo-ah's friend. She followed Jin-hee to the art club and became close to Soo-ah.
Gwangnam Police Station (Jang Tae-gu's team) Hwang Jae-yeol as Detective Park as Choi Kyung-do Seo Ha-jung as Lee Eun-young
Others Do Sang-woo as Kang Hui-rim as Do Kyu-man Lee Kyu-sung as Hwang Dong-hyun Son Bo-seung as Hwang Jun-hyun Kim Dong-won as Lee Hyuk Paek Eun-woo as Kim Min-woo Shin Jee-won as Soo-jin A 24-year-old only daughter of the CEO of W Entertainment. Lee Ha-young as Mimi A student who has studied abroad, she possesses a keen sense of humor and captivating charisma. She also possesses a keen eye for situations, making her a force to be reckoned with.
Production Eunsoo's Good Day is directed by Song Hyun-wook, and written by Jeon Young-shin, who co-wrote Argon (2017) and The Lies Within (2018). It is produced by Baram Pictures and Slingshot Studio. Viewership
+ Average TV viewership ratings Original broadcast date Average audience share(Nielsen Korea)Nielsen Korea ratings:
Nationwide Seoul 1 September 20, 2025 3.7% 3.2% 2September 21, 2025 3.4% 3.3% 3 September 27, 2025 3.6% 3.6% 4 September 28, 2025 5 October 4, 2025 6 October 5, 2025 4.3% 4.4% 7 October 11, 2025 4.3% 4.5% 8 October 12, 2025 4.0% 3.9% 9 October 18, 2025 3.2% 3.2% 10 October 19, 2025 3.7% 3.7% 11 October 25, 2025 3.7% 3.6% 12 October 26, 2025 4.9% 4.5% Average In the table above, the represent the lowest ratings and the represent the highest ratings.
References
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