Less Than Evil[3] (Korean: 나쁜 형사; RR: Nappeun Hyeongsa) is a 2018 South Korean television series based on the British series Luther.

It stars Shin Ha-kyun, Lee Seol, Park Ho-san and Kim Gun-woo.

[6][7][8] The drama centers on the ongoing psychological battle between a brilliant psychopathic murderer and a hot headed, justice-driven Detective Chief Inspector.

[9] The actress Lee Seol was chosen among 300 others who auditioned for the role of Eun Sun-jae to play the female lead.

[19] The first script reading was held in early September, 2018 with the attendance of cast and crew at the MBC in Sangam-dong.