Kisses, Dear Forensic Lady

A perverted murderer appears in City H. He will use a card to guide them to the murder site every time. The name of the victim is written on the card and the time limit for solving the case. If the time is exceeded, the person on the card will be silenced. What is even more frightening is that this perverted murderer can use extraordinary techniques to kill the victim every time, without any flaws.