Bad Detective (Less than Evil) (ซับไทย) (จบ)

Woo Tae-Seok (Shin Ha-Kyun) is a lonely veteran detective. He focuses solely on solving cases. He teeters on a line between good and evil. Woo Tae-Seok crosses paths with a female psychopath (Lee Seol), but he is unable to arrest her due to a lack of evidence. The woman eventually helps Woo Tae-Seok solve other cases.