Shen Juwen's father was a criminal police officer who was involved in an unsolved case. During a field mission, for safety reasons, he shot the top suspect. The suspect in that case hated Shen Juwen, and he used Tang Nantian's same hatred to kill a series of people. Tang Nantian suffered from severe schizophrenia. He was a forensic doctor during the day and a killer at night, but he was different from the devil. He mistakenly killed Shen Wen's wife and was killed because of it. The bloody doll was Tang Nantian's twist.
