This drama is based on the novel “악의 마음을 읽는 자들 / Those Who Read the Minds of Evil”by Kwon Il Yong and Ko Na Moo which was published on 2018-September-28 by Alma. Kwon Il Yong is South Korea’s first criminal profiler.

It is about a criminal profiler who struggles to read the minds of serial killers. Song Ha Young (Kim Nam Gil) is a criminal profiler. He is calm and has charisma. He digs up cases and looks deeply into the human mind.