The Death of Xiao Mei

A headless female corpse is found in a rented apartment, and the police suspect the deceased is Xiao Mei, a tenant there. Annie, who used to share the apartment with Xiao Mei, moved out three months ago. After in-depth investigation, the police discover that Annie's boyfriend, Wang Kai, had an illicit affair with Xiao Mei. Without surveillance cameras in the old residential complex, how will the police solve the case? Is Xiao Mei's death related to Annie? Finally, the police find another victim. Where is she, what complex relationship do they have, and who is the other victim? The police unravel the mystery layer by layer, and the truth gradually emerges.