Sao Shu Ling

Both delve into investigating the criminal mind of a serial killer.
Sao Shu Ling features a serial killer from ten years ago, implicated in a new murder case. But with few evidence, the police and non-police detectives sort through his life to understand and find incriminating evidence against him. But what they find themselves in is a tangled web that raises more doubts than the answers they seek.