Rapid Pursuit

A huge serial murder case suddenly occurred in a certain city. The victims were all young girls in their twenties. They were all pierced through the abdomen with a sharp weapon, and all the victims' internal organs were missing. Only empty cavities were left on the corpses at the scene. After the death of the last victim, the police arrested a suspect. The DNA and fingerprints extracted at the scene were consistent with him, but he always just repeated one sentence, "I don't know." Even so, it could not offset the fact that he committed murder, and the court finally sentenced him to death. Execute immediately. However, the night before his execution, he disappeared from the prison for no apparent reason...