Who is the real murderer

One morning in the summer of 2000, a young and beautiful single woman died violently and naked on her bed. Was it love killing? Rape and murder? Or a vendetta? Officers from the Xifeng City Criminal Police Brigade launched a series of investigations. However, when the criminal police launched the investigation, they found that the entire case was confusing. The deceased Wang Ling lived in a life of luxury and had many lovers. Except for the mysterious loss of the deceased's address book, mobile phone and other items, no trace of the murderer was found at the scene. The investigation of the case is unclear. Who is the real culprit? Is it a sneaky male neighbor, an ex-rapist who often spies on her; or her lover...