Cheo Yong (; lit. Ghost-Seeing Detective Cheo-yong) is a South Korean television series starring Oh Ji-ho, Oh Ji-eun and Jun Hyo-seong. The first season aired on cable channel OCN from February 9 to April 6, 2014 for 10 episodes. The second season aired from August 23, 2015 to October 18, 2015, with Oh Ji-ho and Jun Hyo-seong reprising their roles, and with Ha Yeon-joo playing the protagonist's new partner. Series overview Plot Detective Yoon Cheo-yong was born with the supernatural ability to see, hear and touch ghosts. He solves mysterious, unsolved cases along with tough and passionate colleague Ha Sun-woo, and Han Na-young, the ghost of a high school girl. Cast Main characters Oh Ji-ho as Yoon Cheo-yong A detective who loses his family and partner in a tragic incident. He goes from elite detective in the violent crimes unit to a lowly district cop, completely disengaged from life for seven years. Born with the supernatural ability to see, hear, and touch ghosts, one day Cheo-yong starts talking back to the schoolgirl ghost who keeps haunting him and strangely enough, communicating with the undead is what brings him back to the land of the living. He starts to work mysterious cases with his partner Ha Sun-woo, with the added help of "dead signs" that the victims' souls leave behind. Oh Ji-eun as Ha Sun-woo (season 1) A detective in the regional investigation unit who is famous for her tenacity. Her keen sense of observation makes her particularly good at spotting a suspect's weak point, which also comes in handy for her specialty — crime scene reconstructions. Sun-woo is so dogged in her pursuit of closing cases that other cops find her hard to work with. Jun Hyo-seong as Han Na-young The departed spirit of an ebullient high school girl who roams around a local police investigation unit aiding its inquiries. Ha Yeon-joo as Jung Ha-yoon (season 2) Supporting characters Joo Jin-mo as Kang Ki-young (season 2) Han Sung-yun as Kim Yeon-jin Kim Jin-yi as Dong-mi's friend Yoo Min-kyu as Park Min-jae (season 1) Choi Deok-moon as Yang Soo-hyuk Seo Cho-won as Supporting Oh Woo-jin as Student (season 2) Kim Kwon as Han Tae-kyung (season 2) Im Kang-sung as Jo Nam-ho (season 2) Yoo Seung-mok as Byun Gook-jin Yeon Je-wook as Lee Jong-hyun Guest appearances Baek Sung-hyun as Jang Dae-seok (ep 1-2, 9-10) Kang Ki-hwa as Min Joo-yeon (ep 1) Kim