Tell Me What You Saw (Korean: 본 대로 말하라) is a 2020 South Korean television series starring Jang Hyuk, Choi Soo-young, and Jin Seo-yeon.

One day, his fiancée was killed in an explosion set by a serial killer and Hyun-jae lived in seclusion after that.

Five years later, a new murder takes place using the same method as that serial killer.

While investigating the case, team leader Hwang Ha-young (Jin Seo-yeon) meets a detective from the countryside, Cha Soo-young (Choi Soo-young), who has a photographic memory.

She introduced Soo-young to Hyun-jae and they work together to go after the serial killer.