Catch the Ghost

Catch the Ghost is a 2019 South Korean television series starring Moon Geun-young and Kim Seon-ho. It aired on tvN from October 21 to December 10, 2019.

Synopsis
Yoo Ryeong became a police investigator in order to find her missing twin sister. She was disappointed because the report of losing her sister was ignored by Ha Ma-ri, the police officer at that time. She thinks her sister was a victim of a serial murder by the Subway Ghost, and she does not always follow the rules as she strongly believes in justice. She partners with Go Ji-seok. On the night of her shift, with the help of Kim Woo-hyuk (a police officer at metro who is interested in her perseverance), she searches for her sister in a tunnel without her boss knowing. Meanwhile, Go Ji-seok became famous because of his looks, and for being the best police officer in his class. He gets a promotion to be a metro police officer with his then girlfriend Ha Ma-ri, but circumstances force him to be a police officer at the subway, and that leads to his breakup with her. Unlike Yoo Ryeong, he strictly follows the rules and doesn't like trouble. His partnership with her thus leads to many problems for him. However, due to Yoo Ryeong's sincerity for every case, he begins to think about his past. Later, Yoo Ryeong wants to separate from her partner because she doesn't want to always depend on him. Ji-seok is devastated, but he understands his partner's decision. Inspector Gong, Yoo Ryeong's new partner, is frustrated with her antics. Yoo Ryeong and Ji-seok work together to solve a kidnapping incident at the subway. After their collaboration, the two realize they miss each other. Knowing that Inspector Gong can no longer handle Yoo Ryeong, Ji-seok makes a deal to take back Yoo Ryeong as his partner without her knowing. They become partners again, to catch the Subway Ghost together with their team, and to search for Yoo Ryeong's sister.

Main

 * Moon Geun-young as Yoo Ryeong
 * Kim Seon-ho as Go Ji-seok

Police officers

 * Jo Jae-yoon as Lee Man-jin
 * Ahn Seung-gyun as Kang Soo-ho
 * Jung Yoo-jin as Ha Ma-ri
 * Ki Do-hoon as Kim Woo-hyeok
 * Lee Jun-hyeok as Chief Gong

Others

 * Nam Gi-ae as Han Ae-sim
 * Song Ok-sook as Kim Hyeong-ja
 * Lee Jae-woo as Kim Hyung-soo
 * Park Han-sol as Park Yoo-mi
 * Song Sang-eun as Park Mi-hyun
 * Oh Hee-joon as Serial pervert
 * Park Ho-san as Choi Do-chul (eps. 3-4)
 * Han Ji-sang
 * Lee Se-hee as "Madonna"
 * Lee Hong-nae as Goo Dong-man
 * Kim Gun-woo as Kim Hee-Joon
 * Baek Seo-yi as Ma Hye-jin (eps. 4-5)

Production
Catch the Ghost was supposed to premiere on August 26, 2019, but was pushed back to October. tvN decided to air The Great Show first as the series completed its production.