After a moment of silence, Chen Shi asked, "Are the scratches in the deceased's vagina very serious?"

Peng Sijue replied, "The typical traces that rape cases show are when the murderer enters without protective measures. As the remains had been left therefor too long, some details can no longer be ascertained. I examined carefully for a long time, but no traces of semen were found on the deceased. It seems the murderer did not ejaculate. In addition, it was discovered that the murderer may have killed the deceased while raping her. After the deceased was strangled, he still continued sexually assaulting her for a long time."

Chen Shi pondered, "Could it be that person?" He stood up and said to the chief, "Excuse me, we need to borrow your computer and fax machine."

Chen Shi contacted Lin Qiupu, and...