"Baekilui Nanggoonnim" 2018

Synopsis:

Lee Yool falls off a cliff and nearly dies in an attempted assassination. He loses his memory, and wanders for 100 days under a new name and personality. During this period, he meets Hong Sim, head of the first detective agency in Joseon.

Directed by: Lee Jong-jae
Written by: Noh Ji-Sul
Tagline: I will marry you someday.
Cast:
Doh Kyung-soo
Doh Kyung-soo
Crown Prince Lee Yool / Won-deuk 
Nam Ji-hyun
Nam Ji-hyun
Hong-sim / Yoon Yi-seo 
Cho Seong-ha
Cho Seong-ha
Kim Cha-eon 
Jo Han-chul
Jo Han-chul
King 
Oh Yeon-ah
Oh Yeon-ah
Queen Park 
Ji Min-hyuk
Ji Min-hyuk
Prince Seowon