After discovering his estranged daughter's link to mysterious murders, a forensic detective with autism risks everything to solve the case.

Just as Fang Yi-jen prepares to start a new life with his daughter, he gets entangled in a murder case and becomes a prime suspect.

Fang Yi-jen inspects a fingerprint from the scene of a grisly crime and strikes a deal with investigative journalist Hsu Hai-yin.

On a victim's charred body, Fang yin-jen finds evidence that incriminates a construction company. The truth about Yu Cheng-hao's death comes to light.

As police search for Chang Tsung-chien, Fang recalls an incident in Chiang Hsiao-meng's past and uncovers a shocking truth about the recent deaths.

Amid a probe into the death of a man thought to be an ex-con, Fang and Hsu Hai-yin follow the next link in the murder-suicide chain.

As Liu Kuang-yung's fate hangs by a thread, Fang visits a tattoo shop linked to Hsiao-meng and encounters Hsu.

Detective Chao suspects efforts to destroy evidence and exposes Fang's personal connection to the cases. Hsiao-meng leaves a clue for Fang.

Fang and Hsu learn about Chiang Jo-ying's tragic end. As the investigation faces an impasse, Li Ya-chun turns herself in to the police.

Hsiao-meng and Li Ya-chun makes searing confessions about their personal motivations and involvement in the suicide cult. Hsu finds a new purpose.